A's number is 56, which is 15% less than B's number. What is B's number?
甲数是56，比乙数少15%，乙数是多少？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">56 / (17/20)</gadget>
<output>1_120/17 = around 65.882353</output>

<result>1_120/17 = around 65.882353</result>