A water tank is filled with 3 tons of water, accounting for (3/4) of the total capacity of this water tank. How many tons of water can this water tank hold?
一只水箱里装了3吨水，占这只水箱总容量的(3/4)，这只水箱能装多少吨水？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 / (3/4)</gadget>
<output>4</output>

<result>4</result>