There is a triangular woodland by the river, the base is 800 meters long and the height is 200 meters. If each hectare of forest land can absorb 160 tons of carbon dioxide per year, how many tons of carbon dioxide can this forest land absorb a year?
河边有一片三角形林地，底边长800米，高200米．如果每公顷林地每年可吸收二氧化碳160吨，这片林地一年可吸收二氧化碳多少吨？
<gadget id="calculator">200 / 2 / 10_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">800 * (1/100) * 160</gadget>
<output>1_280</output>

<result>1_280</result>