Move the decimal point of a decimal to the right two places first, and after reducing it by 1000 times, it is 4.02. What is the original number?
把一个小数的小数点先向右移动两位，在缩小1000倍后是4.02，原来的数是多少．
<gadget id="calculator">1_000 / 100</gadget>
<output>10</output>

<gadget id="calculator">4.02 * 10</gadget>
<output>40.2</output>

<result>40.2</result>