Three-fifths of the number A is 10 more than one-half of the number B. The number A is 40. What is the number B?
甲数的五分之三比乙数的二分之一多10，甲数是40，乙数是多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">40 * (3/5)</gadget>
<output>24</output>

<gadget id="calculator">24 - 10</gadget>
<output>14</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">14 / (1/2)</gadget>
<output>28</output>

<result>28</result>