When the little sloppy calculates a whole tens number multiplied by 7, he loses sight of the 0 at the end of the whole tens number, and the calculated result is 189 less than the correct result. Do you know what the correct result is?
小马虎在计算一个整十数乘7时，把这个整十数末尾的0看丢了，算出的结果比正确结果少了189，你知道正确的结果是多少吗？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">189 / 9</gadget>
<output>21</output>

<gadget id="calculator">10 * 21</gadget>
<output>210</output>

<result>210</result>