Pleasant Goat and Lazy Goat are going to jointly start a "Yangyang" company. The two invested a total of 660,000 yuan, of which Lazy Goat's investment is Pleasant's (4/7). 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(4/7)，喜羊羊投资多少万元？
<gadget id="calculator">4 + 7</gadget>
<output>11</output>

<gadget id="calculator">7 / 11</gadget>
<output>7/11 = around 0.636364</output>

<gadget id="calculator">66 * (7/11)</gadget>
<output>42</output>

<result>42</result>