Each person solves two application problems. There are 50 students in Class 1. They make 10 mistakes in total. What is the error rate?
每人解两道应用题，六1班有50人，共错10道题，错误率是多少．
<gadget id="calculator">50 * 2</gadget>
<output>100</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">(1/10) * 1</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>