The school buys 36 bags of school uniforms, 25 pieces per bag, and 80 yuan per piece. How much do these school uniforms cost in total?
学校购买36袋校服，每袋25件，每件80元，这些校服一共需要多少钱？
<gadget id="calculator">25 * 36</gadget>
<output>900</output>

<gadget id="calculator">80 * 900</gadget>
<output>72_000</output>

<result>72_000</result>