You obviously did 8 math problems and got 1 wrong. What is the correct rate of this homework?
明明做了8道数学题，错了1道，这次作业的正确率是多少．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(7/8) * 1</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>