There is a cylindrical grain storage in a certain warehouse. Its bottom circumference is 31.4 meters and its height is 3 meters. If rice is calculated as 600 kilograms per cubic meter, how many tons of rice does this grain storage contain?
某仓库有一个圆柱形粮囤，它的底面周长是31.4米，高是3米，稻谷如果按每立方米600千克计算，这个粮囤装有多少吨稻谷？
<result>141.3</result>