(3/5) of the number A is equal to (7/8) of the number B, the number B is 24, what is the number A? (solution by equation)
甲数的(3/5)与乙数的(7/8)相等，乙数是24，甲数是多少？(用方程解)
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">24 * (7/8)</gadget>
<output>21</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">21 / (3/5)</gadget>
<output>35</output>

<result>35</result>