a: 35,88+19,36=55,24
81,625+147,307=228,932
539,6+73,495=613,095
247,06+316,492=563,552
b: 8,32+14,6+5.24=28,16
8,9+9,3+4,7+5=27,9
24,9+57,36+5,45=87,71
324,8+66,7+208,4=599,9
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