A toy factory puts 630 pieces of toys into 5 plastic bags and 6 paper bags respectively, and there are as many toys in a plastic bag as in 3 paper bags. How many toys are in each paper bag.
某玩具厂把630件玩具分别装入5个塑料袋和6个纸袋里，一个塑料袋与3个纸袋装的玩具同样多．每个纸袋装多少件玩具．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">15 + 6</gadget>
<output>21</output>

<gadget id="calculator">630 / 21</gadget>
<output>30</output>

<result>30</result>