There are 8 fish tanks with the same number of fish. If 5 fish are taken from each tank, the total number of remaining fish in the 8 tanks is exactly equal to the total number of fish in the original 3 tanks. It turns out how many fish tanks there are.
有8个鱼缸中放着数量相同的鱼，如果从每个鱼缸中取出5条来，则8个鱼缸中所剩下的鱼的总数正好等于原来3个鱼缸中鱼的总数．原来每个鱼缸有多少条．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">5 * (8/5)</gadget>
<output>8</output>

<result>8</result>