How much more is the 2 in the second digit to the left of the decimal point than the 2 in the second digit to the right of the decimal point
小数点左边第二位上的2要比小数点右边第二位上的2多多少
<gadget id="calculator">20 - 0.02</gadget>
<output>19.98</output>

<result>19.98</result>