75% of the number A is equal to (2/3) of the number B, the number B is 90, what is the number A?
甲数的75%等于乙数的(2/3)，乙数是90，甲数是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/3) / (3/4)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">90 * (8/9)</gadget>
<output>80</output>

<result>80</result>