3.16 How much is it reduced from the original number after being reduced by 10 times?
3.16缩小10倍后比原来的数减少多少．
<gadget id="calculator">3.16 / 10</gadget>
<output>0.316</output>

<gadget id="calculator">3.16 - 0.316</gadget>
<output>2.844</output>

<result>2.844</result>