The sum is twenty three thousand,one hundred and ten
Five hundred million = 500,000,000; Twenty one nundred thousand = 2,100,000. Their sum is 502,100,000.
The sum of 32 and -128 is -96.
nineteen is not equal to the sum of one and one tenth of one hundred
6 + 18 + 20 = 44
The sum is 109 7/8
The sum of five million two hundred eighty-four thousand and six million nine hundred eighteen thousand five hundred is: 12,202,500
129.600.000.000 would be written as one hundred twenty nine billion 6 hundred million. You could also write 129.6 billion.