After enlarging a decimal by 100 times, move the decimal point to the left by one, and get 72.3. So what is the original decimal.
把一个小数扩大100倍后，小数点再向左移动一位，得72.3．那么原来这个小数是多少．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">72.3 * (1/10)</gadget>
<output>7.23</output>

<result>7.23</result>