A school has 100 students participating in the "Shenzhou Flying Apsaras" knowledge contest. Their average score is 74 points, the average score of boys is 70 points, and the average score of girls is 80 points. How many boys are there?
某校有100名学生参加"神舟飞天"知识竞赛，他们的平均分是74分，男生的平均分数是70分，女生的平均分数是80分，问参加竞赛的男生有多少人？
<gadget id="calculator">80 * 100</gadget>
<output>8_000</output>

<gadget id="calculator">100 * 74</gadget>
<output>7_400</output>

<gadget id="calculator">8_000 - 7_400</gadget>
<output>600</output>

<gadget id="calculator">80 - 70</gadget>
<output>10</output>

<gadget id="calculator">600 / 10</gadget>
<output>60</output>

<result>60</result>