The number of A is 60, the number of A is more than the number of B (1/5), what is the number of B
甲数是60，甲数比乙数多(1/5)，乙数是多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">60 / (6/5)</gadget>
<output>50</output>

<result>50</result>