There are 72 volleyballs and footballs in the school sports room. When lending volleyballs (1/4) and footballs (2/5), the remaining volleyballs are as many as footballs. How many volleyballs are there?
学校体育室有排球、足球共72个，当借出排球的(1/4)，足球借出(2/5)时，余下的排球与足球一样多，原有排球多少个．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">72 * (2/5)</gadget>
<output>144/5 = around 28.8</output>

<gadget id="calculator">72 - (144/5)</gadget>
<output>216/5 = around 43.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">1 + (7/20)</gadget>
<output>27/20 = around 1.35</output>

<gadget id="calculator">(216/5) / (27/20)</gadget>
<output>32</output>

<result>32</result>