There are 210 teddy bears in the toy store, and the number of toy dogs is 20 less than 7 times the number of teddy bears. How many toy dogs are there?
玩具店里有玩具熊210只，玩具狗的只数比玩具熊的7倍少20只，玩具狗有多少只？
<gadget id="calculator">210 * 7</gadget>
<output>1_470</output>

<gadget id="calculator">1_470 - 20</gadget>
<output>1_450</output>

<result>1_450</result>