A's number is 40, which is 18 less than B's (2/3), what is B's number?
甲数是40，比乙数的(2/3)少18，乙数是多少？
<gadget id="calculator">40 + 18</gadget>
<output>58</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">58 / (2/3)</gadget>
<output>87</output>

<result>87</result>