The stock market has been going up all the way this year. Dad and Uncle Li partnered to buy stocks, and the principal paid by Dad was 1.8 times that of Uncle Li. Up to now, the two have earned 42,000 yuan by buying stocks in partnership. The money earned is divided according to the principal paid by the two, so how much yuan should each of them get?
今年的股市一路走高，爸爸和李叔叔合伙买股票，其中爸爸拿出的本金是李叔叔的1.8倍．到现在，两人合伙买股票已经赚了4.2万元，按两人所付的本金分摊所赚的钱，那么两人各应分到多少万元？
<gadget id="calculator">1 + 1.8</gadget>
<output>2.8</output>

<gadget id="calculator">4.2 / 2.8</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 * 1</gadget>
<output>1.5</output>

<result>1.5</result>