There are 220 students in the sixth grade. The ratio of male to female students is 5:6. How many are male students?
六年级有220人，男女生人数比是5：6，男生有多少人．
<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">220 * (5/11)</gadget>
<output>100</output>

<result>100</result>