50 students in the fifth grade of a certain school participated in a mathematics competition, and the average score was 63 points. The average score for girls was 70 points, and the average score for boys was 60 points. How many more boys than girls?
某学校五年级50名学生参加数学竞赛，平均分为63分，女生平均分为70分，男生平均分为60分，男生比女生多多少人．
<gadget id="calculator">70 * 50</gadget>
<output>3_500</output>

<gadget id="calculator">63 * 50</gadget>
<output>3_150</output>

<gadget id="calculator">3_500 - 3_150</gadget>
<output>350</output>

<gadget id="calculator">70 - 60</gadget>
<output>10</output>

<gadget id="calculator">350 / 10</gadget>
<output>35</output>

<gadget id="calculator">50 - 35</gadget>
<output>15</output>

<gadget id="calculator">35 - 15</gadget>
<output>20</output>

<result>20</result>