A certain store bought a batch of apples and spent 100 yuan in freight during the transportation process. Later, it decided to sell these apples at a price reduced to 70% of the original price, so that the total profit obtained was only (1/3) of the original plan. ). It is known that the purchase price of this batch of apples is 6 yuan and 40 cents per kilogram, and the original plan can make a profit of 2,700 yuan. Q: How many kilograms are there in total in this batch of apples?
某家商店购人一批苹果，在运输过程中花去100元运费，后来决定将这些苹果的价格降到原定价的70%卖出，这样所得的总利润就只有原计划的(1/3)．已知这批苹果的进价是每千克6元4角，原计划可获得利润2700元．问：这批苹果一共有多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/10) / (2/3)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">(11/20) / (9/20)</gadget>
<output>11/9 = around 1.222222</output>

<gadget id="calculator">2_700 * (11/9)</gadget>
<output>3_300</output>

<gadget id="calculator">3_300 - 100</gadget>
<output>3_200</output>

<gadget id="calculator">3_200 / 6.4</gadget>
<output>500</output>

<result>500</result>