It is known that the number of A is 60, and the number of B is 20% of the number of A. What is the number of B?
已知甲数是60，乙数是甲数的20%，乙数是多少．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">60 * (1/5)</gadget>
<output>12</output>

<result>12</result>