There are the same number of pencil cases in the box, if 60 pencil boxes are taken out from each box, then the sum of the number of pencil boxes left in the 5 boxes is equal to the sum of the numbers in the original 2 boxes. How many pencil cases are there in each box?
箱里放着同样个数的铅笔盒，如果从每只里拿出60个，那么5只箱里剩下铅笔盒的个数的总和等于原来2只箱里个数的和．原来每只箱里有多少个铅笔盒．
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">60 * (5/3)</gadget>
<output>100</output>

<result>100</result>