Question 595819
<pre>
{{{5yd/1}}}×{{{(3ft)/(1yd)}}}×{{{12in/(1ft)}}} =

Cancel the yd's:

{{{5cross(yd)/1}}}×{{{(3ft)/(1cross(yd))}}}×{{{12in/(1ft)}}}

Cancel the ft's:

{{{5cross(yd)/1}}}×{{{(3cross(ft))/(1cross(yd))}}}×{{{12in/(1cross(ft))}}}

All that's left is

{{{(5*3*12in)/1}}} =

{{{180in}}}

Edwin</pre>