A cylindrical reservoir with a bottom area of 628 square meters can store 3140 cubic meters of water. How many cubic meters of water can be stored if it is dug to a depth of 0.5 meters?
一个底面积是628平方米的圆柱形蓄水池能蓄水3140立方米，如果再挖深0.5米可蓄水多少立方米？
<gadget id="calculator">628 * 0.5</gadget>
<output>314</output>

<gadget id="calculator">314 + 3_140</gadget>
<output>3_454</output>

<result>3_454</result>