The school bought a total of 34 sets of double desks and chairs, 120 yuan for a table and 40 yuan for a chair. How much did you spend in total?
学校共买来34套双人课桌椅，一张桌子120元，一把椅子40元．一共花了多少元钱？
<gadget id="calculator">120 + 40 + 40</gadget>
<output>200</output>

<gadget id="calculator">200 * 34</gadget>
<output>6_800</output>

<result>6_800</result>