(5/6) of a number is (3/4) of 40, what is this number? (solution by equation)
一个数的(5/6)是40的(3/4)，这个数是多少？(用方程解)
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">40 * (3/4)</gadget>
<output>30</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">30 / (5/6)</gadget>
<output>36</output>

<result>36</result>