The number A is 32, which is 4 less than 40% of the number B. Find the number B? (Solution of column equation)
甲数是32，比乙数的40%少4，求乙数？(列方程解)
<gadget id="calculator">32 - 32</gadget>
<output>0</output>

<gadget id="calculator">32 + 4 + 0</gadget>
<output>36</output>

<gadget id="calculator">36 / 0.4</gadget>
<output>90</output>

<result>90</result>