I use
\begin{figure}[htbp]
\centering
\includegraphics[width=0.92\textwidth]{280}
\caption{Page 280 }
\end{figure}
$\left.\right.$\
At node H there is a $30%$ chance that the employee will choose to exercise the option.\
In cases where the employee does not choose to exercise, there is a $45%$ chance that the employee leaves the company and has to exercise.\
The total probability of exercise is
$$0.3 + (1- 0.3)\times 0.05 = 0.334.$$
Even I manually modify the edition, when I insert some new sentences in the content, the problem will occur and I need modification again. So is there any intelligent way to insert the picture.
If I use
Here $\E^T$ is under $T$-forward measure. As the margin paid everyday, there is no time value, then we can regard as $r=0$ or a stock with dividend yield $q = r.$ in the futures price.
\vspace{10pt}
\textbf{Speculating} The observation that in the classical Black-Scholes theory the drift of the asset plays no part.
the result is
But my goal is following. And I only want to indent for this paragraph, but not change the whole article style. And \indent seems not work for the beginning of a paragraph.

hoption and adding\label{key}inside the caption and(fig. \ref{key }) in the text (do not forget compile twice). – Fran Sep 10 '17 at 07:10$\left.\right.$\\What the heck? What is that supposed to be doing? Stuff like that messes up your document, it isn't LaTeX, it is you. Same for the displayed math later. I suggest to stop right now and read an introduction. – Johannes_B Sep 10 '17 at 07:35\fbox{\includegraphics[width=0.92\textwidth]{280}}), or lack of text, your options, paragraph skips, all together, ...who know without a minimal working example (MWE) to check. Also see this famous question to understand the floats environments. – Fran Sep 10 '17 at 07:47xxxx \vspace{10pt}\\ xxxxx). Then I use this way – A.Oreo Sep 10 '17 at 07:57\\outside tables, let latex do the line breaking it is rare to need forced line breaks in text. Also$$should not be used in latex. – David Carlisle Sep 10 '17 at 09:05xxxx (next line)\vspace{10pt}\\(next line) xxxxx).i.eleft some space between the old paragraph and new paragraph, moreover, I don't want place some space at the beginning of the new paragraph– A.Oreo Sep 10 '17 at 10:14\\after avspace? what would you want it to do? and yourie .. old and new paragraphis hard to understand asxxxx (next line)\vspace{10pt}\\(next line) xxxxxis a single paragraph. Just use blank lines between paragraphs the choice of inter paragraph spacing and whether you use an indent is set by the document class or in the preamble (eg parskip package) in the very rare cases that you need to add extra space between two paragraphs use a blank line to end the first the use\vspace{10pt}to add additional space. – David Carlisle Sep 10 '17 at 10:37parskip. (Sorry for yelling!) – Johannes_B Sep 10 '17 at 10:57\vspaceor font changes such as\textbfthe choice of spacing is a document-wide style choice which should be set once at the start of the document. you Speculating looks like some kind of inline heading so should probably be\paragraph{Speculating}which would add additional vertical space, make it bold and have no indentation with no additional markup. – David Carlisle Sep 10 '17 at 11:10And \indent seems not work for the beginning of a paragraph.you seen to want\noindentrather than\indentdon't you? (But you do not need either) – David Carlisle Sep 10 '17 at 11:14\paragraphis exactly what I want. – A.Oreo Sep 10 '17 at 11:16