How much is 40 centimeters in 1 meter?
40厘米是1米的多少．
<gadget id="calculator">1 * 100</gadget>
<output>100</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>