A fruit shop sells 400 kilograms of fruit in the afternoon, which is (1/3) more than in the morning. How many kilograms of fruit did you sell in the morning?
一个水果店下午卖出水果400千克，比上午多卖出(1/3)．上午卖出水果多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">400 / (4/3)</gadget>
<output>300</output>

<result>300</result>