Your sum was 279+79... which is CCCVIII (308)
.CCLXXIX = 279
1250
2048
42
XXIX XXIX XXIX
4+1=5. Plus 4 equals 9. Plus 77685769844446473 equals 77685769844446482. Plus 3 equals 77685769844446485. Plus 8 equals 77685769844446493. Plus 1 equals 77685769844446494. Plus 9870998342523322424 equals 1064785604097768918. Plus 4 equals 1064785604097768922.
It is the property that equals plus equals are equals.
the answer is a
No.
If I am correct, 9 plus 7 equals 112.
89
26