Wang Peng's family bought 150 catties of rice and 100 catties of flour. After eating for a month, he found that the amount of rice he ate was the same as that of noodles, and the amount of leftover rice was exactly 6 times that of noodles.
王朋家里买了150斤大米和100斤面粉，吃了一个月后，发现吃的米和面一样多，而且剩的米刚好是面的6倍，则米剩多少斤．
<gadget id="calculator">100 * 6</gadget>
<output>600</output>

<gadget id="calculator">600 - 150</gadget>
<output>450</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">450 / 5</gadget>
<output>90</output>

<gadget id="calculator">150 - 90</gadget>
<output>60</output>

<result>60</result>