There are 42 people participating in a computer interest group in a certain school, and the ratio of males to females is 4:3. How many males are there?
某校参加电脑兴趣小组的有42人，其中男、女生人数的比是4：3，男生有多少人？
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">42 * (4/7)</gadget>
<output>24</output>

<result>24</result>