A number is reduced to the original (1/10), and then expanded to 100 times the original is 3.21, what is this number
一个数缩小为原来的(1/10)，再扩大为原来的100倍是3.21，这个数是多少
<gadget id="calculator">3.21 / 100</gadget>
<output>0.0321</output>

<gadget id="calculator">0.0321 * 10</gadget>
<output>0.321</output>

<result>0.321</result>