The number A is 36 less than the number B, and the number A is 20 less than 60% of the number B. Find the number B?
甲数比乙数少36，甲数比乙数的60%少20，求乙数？
<gadget id="calculator">36 - 20</gadget>
<output>16</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">16 / (2/5)</gadget>
<output>40</output>

<result>40</result>