Move the decimal point of a number to the right first, and then reduce it to the original (1/1000) and then it is 0.428. What is the original number.
把一个数的小数点先向右移动一位，再缩小到原来的(1/1000)后是0.428．原来这个小数是多少．
<gadget id="calculator">0.428 / 10</gadget>
<output>0.0428</output>

<gadget id="calculator">1_000 / 1</gadget>
<output>1_000</output>

<gadget id="calculator">0.0428 * 1_000</gadget>
<output>42.8</output>

<result>42.8</result>