This practical activity will cost 675 yuan, the school allocated 450 yuan to us, and everyone will share the rest. There are 45 students in my class, how much money do we need to prepare on average?
这次实践活动要花费675元，学校拨给我们450元，剩下的由大家分担，我班45人，平均每人要准备多少钱？
<gadget id="calculator">675 - 450</gadget>
<output>225</output>

<gadget id="calculator">225 / 45</gadget>
<output>5</output>

<result>5</result>