A triangular paddy field has a base of 40m and a height of 30m. The average yield of rice per square meter is 0.75kg. How many kilograms of paddy can be harvested in this paddy field?
一块三角形的稻田，底是40m，高是30m，平均每平方米收稻谷0.75kg，这块稻田共能收稻谷多少千克？
<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">40 * 25 * 0.75</gadget>
<output>750</output>

<result>750</result>