The store bought a batch of fruit, sold 30% on the first day, and sold 150 kilograms on the second day, which was 20% more than the total mass sold on the first day. How many kilograms is this batch of fruit?
商店进了一批水果，第一天卖出30%，第二天卖出150千克，比第一天多卖出总质量的20%．这批水果有多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/10) + (1/5)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">150 / (1/2)</gadget>
<output>300</output>

<result>300</result>