Aunt Wang bought two apples for 1 yuan, and sold all three apples for 2 yuan, making a total profit of 200 yuan. How many apples did Aunt Wang buy?
王大妈以1元钱2个买进一些苹果，又以2元钱3个把苹果全部卖出，共获利润200元．王大妈买进苹果多少个．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(2/3) - (1/2)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">200 / (1/6)</gadget>
<output>1_200</output>

<result>1_200</result>