A batch of goods was contracted to three transport teams A, B and C. Team A transported 138.67 tons, which was 6.4 tons less than team B and 2.8 tons more than team C. How many tons did this batch of goods have in total?
一批货物承包给甲、乙、丙三个运输队，甲队运了138.67吨，比乙队少运6.4吨，比丙队多运2.8吨，这批货物一共有多少吨？
<gadget id="calculator">138.67 + 6.4</gadget>
<output>145.07</output>

<gadget id="calculator">138.67 - 2.8</gadget>
<output>135.87</output>

<gadget id="calculator">138.67 + 145.07 + 135.87</gadget>
<output>419.61</output>

<result>419.61</result>