The decimal point of a number is moved one place to the left and is 72 smaller than the original number. What is this number?
一个数的小数点向左移动一位后比原数小72，这个数是多少？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">72 / (9/10)</gadget>
<output>80</output>

<result>80</result>