There are 660 students in Huayuan Primary School, among which sixth grade students account for 1/6 of the whole school, and sixth grade boys account for 60% of the whole grade. How many sixth grade boys are there in Huayuan Primary School?
花园小学有学生660人，其中六年级学生占全校人数的(1/6)，六年级男生占全年级的60%，花园小学六年级男生有多少人？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">660 * (1/6) * (3/5)</gadget>
<output>66</output>

<result>66</result>