Xiaoming's mother's monthly salary is 1200 yuan, and his father's monthly salary is twice that of his mother's. How much more is his father's monthly salary than his mother's?
小明妈妈的月工资是1200元，爸爸的月工资是妈妈的2倍，爸爸的月工资比妈妈多多少元？
<gadget id="calculator">1_200 * 2</gadget>
<output>2_400</output>

<gadget id="calculator">2_400 - 1_200</gadget>
<output>1_200</output>

<result>1_200</result>