If a number is multiplied by 10 and subtracted by 1, the resulting number is 71 more than the original number. What is the original number?
一个数乘10减1，得到的数比原来的数多71，原来的数是多少？
<gadget id="calculator">71 + 1</gadget>
<output>72</output>

<gadget id="calculator">72 / 10</gadget>
<output>36/5 = around 7.2</output>

<result>36/5 = around 7.2</result>