A water container with a length of 60 cm and a width of 20 cm, put 5 iron blocks of equal volume into the water, the water level in the container rises exactly 4 cm, find the volume of each iron block.
一个长60厘米、宽20厘米的盛水容器，把5块体积相等的铁块投入水中，容器中的水面正好上升了4厘米，求每块铁块的体积．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 * 20 * (4/5)</gadget>
<output>960</output>

<result>960</result>