Simple calculation: 62*(1/63). (Hint: you can think of 62 as (63-1)).
简便计算：62*(1/63)．(提示：可以把62看成(63-1))．
<gadget id="calculator">1 / 63</gadget>
<output>1/63 = around 0.015873</output>

<gadget id="calculator">62 * (1/63)</gadget>
<output>62/63 = around 0.984127</output>

<result>62/63 = around 0.984127</result>