(1/5) of the number A is equal to the number B, the number B is 45, what is the number A?
甲数的(1/5)与乙数相等，乙数是45，甲数是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">45 / (1/5)</gadget>
<output>225</output>

<result>225</result>