as far as I can tell, Check the picture below.
[tex]\stackrel{mixed}{3\frac{1}{4}}\implies \cfrac{3\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{13}{4}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{}{\cfrac{13}{4}\implies \stackrel{\textit{how many times does }\frac{3}{4}\textit{ go into }\frac{13}{4}?}{\cfrac{3+3+3+3+1}{4}\implies \underset{\textit{4~times with a remainder of }\frac{1}{4}}{\cfrac{3}{4}+\cfrac{3}{4}+\cfrac{3}{4}+\cfrac{3}{4}~~ + ~~\cfrac{1}{4}}}}~\hfill \blacktriangleright 3\frac{1}{4}\div \cfrac{3}{4} \blacktriangleleft[/tex]
