When calculating 0.75*5, consider 0.75*5 as 75*5, and then reduce the product to its (1/(())).
计算0.75*5时，把0.75*5可以看作75*5，再把积缩小到他的(1/(()))．
<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>