To transport 570 tons of raw materials to the processing plant, (1/3) of the total weight is transported for the first time, and (2/5) of the total weight is transported for the second time. How many tons are left?
要把570吨原料运到加工厂，第一次运走总重的(1/3)，第二次运走总重的(2/5)．还剩下多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 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">570 * (4/15)</gadget>
<output>152</output>

<result>152</result>