The product of two numbers a and b is 19.8. If a is enlarged by 10 times and b is enlarged by 100 times, what is the product of a and b?
a、b两数的乘积是19.8，若a扩大10倍，b扩大100倍，那么a、b的乘积是多少．
<gadget id="calculator">10 * 100</gadget>
<output>1_000</output>

<gadget id="calculator">19.8 * 1_000</gadget>
<output>19_800</output>

<result>19_800</result>