pile of coal weighs 600 tons, and 1/3 of the total amount is removed for the first time, and 20% more than the first time is removed for the second time, how many tons of coal are left in this pile?
一堆煤重600t，第一次运走总数的(1/3)，第二次比第一次多运走20%，这堆煤还剩多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<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">(1/3) * (6/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">600 * (4/15)</gadget>
<output>160</output>

<result>160</result>