When Xiaoqiang uses the vertical formula to calculate 50.2 plus a two-digit decimal, he treats the plus sign as a minus sign and gets 2.45. What is the correct result?
小强用竖式计算50.2加上一个两位小数时，把加号看成减号，得2.45，正确的结果是多少．
<gadget id="calculator">50.2 - 2.45</gadget>
<output>47.75</output>

<gadget id="calculator">50.2 + 47.75</gadget>
<output>97.95</output>

<result>97.95</result>