The fruit shop purchased a batch of fruits, 30% of which were shipped in the morning and 40% in the afternoon. The remaining 120 kg has not arrived. How many kilograms is this batch of fruit in total?
水果店采购了一批水果，上午运来30%，下午运来40%．还剩下120千克没有运到．这批水果共有多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/10) + (2/5)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">120 / (3/10)</gadget>
<output>400</output>

<result>400</result>