A cube with side length 7 cm, if its height is increased by 3 cm, how many cubic centimeters will its volume increase from its original volume?
一个棱长是7厘米的正方体，如果它的高增加3厘米，体积比原来增加多少立方厘米．
<gadget id="calculator">7 * 7 * 3</gadget>
<output>147</output>

<result>147</result>