The school bought 50 sets of tables and chairs, each table was 78 yuan, and each chair was 22 yuan. How much did the school share?
学校买来50套桌椅，每张桌子78元，每把椅子22元，学校共用了多少元？
<gadget id="calculator">78 + 22</gadget>
<output>100</output>

<gadget id="calculator">100 * 50</gadget>
<output>5_000</output>

<result>5_000</result>