A decimal is first reduced by 100 times and then enlarged by 10 times. The result is 32.1. What is the original number of this decimal?
一个小数先缩小100倍，再扩大10倍，结果是32.1，这个小数原来是多少．
<gadget id="calculator">32.1 * 10</gadget>
<output>321</output>

<result>321</result>