The two bottles of oil weigh a total of 2.7 kg. After 0.2 kg of oil in the large bottle is used up, the weight ratio of the remaining oil to the oil in the small bottle is 3:2. How many kilograms of oil are originally contained in the large bottle?
两瓶油共重2.7千克．大瓶的油用去0.2千克后，剩下的油与小瓶内油的重量比是3：2．求大瓶子里原来装有多少千克油？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * 2.7</gadget>
<output>4.05</output>

<gadget id="calculator">0.2 + 4.05</gadget>
<output>4.25</output>

<gadget id="calculator">1 + (3/2)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4.25 / (5/2)</gadget>
<output>1.7</output>

<result>1.7</result>