The cafeteria bought 60 bags of rice and 40 bags of flour. Each bag of rice and flour weighed 50 kilograms. How many tons of rice and flour were bought?
食堂买来60袋大米、40袋面粉，每袋大米和面粉都重50千克，买来大米和面粉共多少吨？
<gadget id="calculator">60 + 40</gadget>
<output>100</output>

<gadget id="calculator">50 / 1_000</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">100 * (1/20)</gadget>
<output>5</output>

<result>5</result>