The ratio of the number of boys and girls in the sixth grade is 5:7, and there are 150 boys. How many people are there in the sixth grade?
六年级男、女生人数的比是5：7，男生有150人．六年级一共有多少人？
<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">150 / (5/12)</gadget>
<output>360</output>

<result>360</result>