Calculation: 20.07*1994-19.93*2007.
计算：20.07*1994-19.93*2007．
<gadget id="calculator">20.07 * 1_994</gadget>
<output>40_019.58</output>

<gadget id="calculator">19.93 * 2_007</gadget>
<output>39_999.51</output>

<gadget id="calculator">40_019.58 - 39_999.51</gadget>
<output>20.07</output>

<result>20.07</result>