A bag of oranges is 4 kilograms. After eating (3/4), how many kilograms are left?
一袋桔子4千克，吃了(3/4)，还剩多少千克．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<result>1</result>