There is a batch of coal in the freight yard, 20% of the total is transported in the first time, and 40% of the total is transported in the second time, and a total of 27.6 tons are transported in the two times. How many tons was this batch of coal originally?
货场有一批煤，第一次运走总数的20%，第二次运走总数的40%，两次共运走27.6吨．这批煤原来有多少吨？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/5) + (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">27.6 / (3/5)</gadget>
<output>46</output>

<result>46</result>