The school bought 8 volleyballs, exactly the number of basketballs (4/5), and the number of footballs bought was 40% of the number of basketballs. How many footballs did the school buy?
学校买来排球8个，刚好是买来篮球个数的(4/5)，买来足球的个数是篮球个数的40%．学校买来足球多少个．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">8 / (4/5)</gadget>
<output>10</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">10 * (2/5)</gadget>
<output>4</output>

<result>4</result>