a is enlarged by 1000 times and then reduced by 100 times 25.6, a=how much.
a扩大1000倍后再缩小100倍25.6，a=多少．
<gadget id="calculator">100 / 1_000</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">25.6 * (1/10)</gadget>
<output>2.56</output>

<result>2.56</result>