A cone-shaped grain mound is 1.5 meters high and has a base diameter of 2 meters. If each cubic meter of rice weighs 650 kilograms, how many kilograms does this pile of rice weigh?
一个圆锥形的谷堆高1.5米，底面直径是2米．如果每立方米的稻谷重650千克，这堆稻谷重多少千克？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 1 * 1.5 * (1/3) * 650</gadget>
<output>1_020.5</output>

<result>1_020.5</result>