The school shipped 1,000 sets of desks and chairs, which have been evenly distributed to 18 classes. There are 190 sets left. How many sets are divided into each class?
学校运来1000套桌椅，已经平均分给了18个班．还剩190套．每班分了多少套？
<gadget id="calculator">1_000 - 190</gadget>
<output>810</output>

<gadget id="calculator">810 / 18</gadget>
<output>45</output>

<result>45</result>