Uncle Zhang raises fish in a fish pond of 960 square meters. If 15 fry are stocked per 4 square meters, how many fry should Uncle Zhang stock in this fish pond?
张叔叔在960平方米的鱼塘养鱼，如果每4平方米放养鱼苗15尾，张叔叔应该在这个鱼塘放养多少尾鱼苗？
<gadget id="calculator">960 / 4</gadget>
<output>240</output>

<gadget id="calculator">240 * 15</gadget>
<output>3_600</output>

<result>3_600</result>