The unit price of basketball is 120 yuan, the unit price of volleyball is (4/5) of the unit price of basketball, and the unit price of football is (7/8) of the unit price of volleyball. How much is a football?
篮球的单价是120元，排球的单价是篮球的单价的(4/5)，足球的单价是排球单价的(7/8)，一个足球多少钱？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">120 * (4/5) * (7/8)</gadget>
<output>84</output>

<result>84</result>