In a mathematics test with 40 students in Class 3, Grade 6, there were 5 calculation questions on the test paper, and the whole class got 15 questions wrong. Find the correct rate of the students in this class.
六年级3班有40人参加的一次数学测验中，试卷上有5道计算题，全班错了15题，求这个班级学生计算题的正确率．
<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<gadget id="calculator">200 - 15</gadget>
<output>185</output>

<gadget id="calculator">185 / 200</gadget>
<output>37/40 = around 0.925</output>

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

<gadget id="calculator">(37/40) * 1</gadget>
<output>37/40 = around 0.925</output>

<result>37/40 = around 0.925</result>