The school cafeteria used 150.6 tons of rice in the second half of the year, 19.28 tons less than the first half of the year. How many tons of rice are used throughout the year?
学校食堂下半年用大米150.6吨，比上半年少用19.28吨．全年用大米多少吨．
<gadget id="calculator">150.6 + 19.28</gadget>
<output>169.88</output>

<gadget id="calculator">150.6 + 169.88</gadget>
<output>320.48</output>

<result>320.48</result>