Question 841487
Estimating {{{6&1/4*36}}}:
Approximately {{{6*36}}}, about a little more than halfway up from {{{6*30}}} to {{{6*40}}}; those being 180 and 240.
Imagine that to be near 215, just thinking mentally, almost visually.


The exact computation:
{{{(6+1/4)36=6*36+36/4=6*36+9=216+9=highlight(225)}}}


My final estimation step was imprecise, but it was, at least, not a bad estimate, ...  I could have looked at the difference from 240 to 180, which would be 60, and cut this in half, being 30, and add this to 180, to get 210; and then I would add just a little bit to it.  That was about the result of my estimation in any case.