There are 72 students in Zhangzhuang Primary School participating in the sports meeting. The ratio of the number of boys to the number of girls is 5:3, so how many more boys than girls?
张庄小学有72名同学参加运动会，其中男生人数和女生人数的比是5：3，那么男生比女生多多少人？
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">72 * (5/8)</gadget>
<output>45</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">72 * (3/8)</gadget>
<output>27</output>

<gadget id="calculator">45 - 27</gadget>
<output>18</output>

<result>18</result>