A number is enlarged by 100 times and then reduced by 10 times to 15. What is the number?
一个数扩大100倍，再缩小10倍后为15，这个数是多少
<gadget id="calculator">15 / 10</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>