Pleasant Goat and Lazy Goat are going to jointly start a "Yangyang" company. They have invested a total of 660,000 yuan, of which Lazy Goat's investment is 20% of Pleasant Goat's. How much is Pleasant Goat's investment?
喜羊羊和懒羊羊准备合开一家"羊羊"公司，两人共投资66万元，其中懒羊羊投资数是喜羊羊的20%，喜羊羊投资多少万元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">66 / (6/5)</gadget>
<output>55</output>

<result>55</result>