15 students participated in a rope skipping competition, with an average of 152 jumps per person. Among them, the girls jumped 140 times each, and the boys jumped 160 times on average. How many more boys than girls?
15个同学进行跳绳比赛，平均每人跳152下．其中女生每人跳140下，男生平均每人跳160下．男生比女生多几人？
<gadget id="calculator">160 * 15</gadget>
<output>2_400</output>

<gadget id="calculator">152 * 15</gadget>
<output>2_280</output>

<gadget id="calculator">2_400 - 2_280</gadget>
<output>120</output>

<gadget id="calculator">160 - 140</gadget>
<output>20</output>

<gadget id="calculator">120 / 20</gadget>
<output>6</output>

<gadget id="calculator">15 - 6 - 6</gadget>
<output>3</output>

<result>3</result>