The school bought 5 sets of desks and chairs for 1250 yuan. It is known that each chair costs 100 yuan. How much is each desk?
学校用1250元买了5套办公桌椅，已知每把椅子100元，每张桌子多少元？
<gadget id="calculator">1_250 / 5</gadget>
<output>250</output>

<gadget id="calculator">250 - 100</gadget>
<output>150</output>

<result>150</result>