It is known that the number B is 150, and (3/5) of the number B is exactly equal to 75% of the number A. What is the number A?
已知乙数是150，乙数的(3/5)正好等于甲数的75%，甲数是多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) / (3/4)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">150 * (4/5)</gadget>
<output>120</output>

<result>120</result>