There are 120 tons of sand on the construction site, used up (7/24), how many tons are left?
工地上有120吨沙子，用去了(7/24)，还剩多少吨？
<gadget id="calculator">7 / 24</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">1 - (7/24)</gadget>
<output>17/24 = around 0.708333</output>

<gadget id="calculator">120 * (17/24)</gadget>
<output>85</output>

<result>85</result>