The difference between the numbers A and B is 180. If the decimal point of A is moved to the right by one, it will be equal to B. what is the number
甲、乙两数的差是180，如果将甲的小数点向右移动一位就与乙相等．甲数是多少
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">180 / 9</gadget>
<output>20</output>

<result>20</result>