Add 8 to a number, multiply by 8, subtract 8, and divide by 8. The result is 8. What is this number?
一个数加上8，再乘8，又减去8，再除以8，得数是8，这个数是多少？
<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">64 + 8</gadget>
<output>72</output>

<gadget id="calculator">72 / 8</gadget>
<output>9</output>

<gadget id="calculator">9 - 8</gadget>
<output>1</output>

<result>1</result>