580 + 580 = 1160
580 + 5 = 585
580
950
580
How about 500 plus 80 = 580 as one example
108.
150 + 200 + 100 + 130 = 580
The answer = 4590
The lowest term of the fraction 580/720 is 29/36. By inspection, divide by 10 to get 58/72, then divide by 2 to get 29/36. Since 29 is prime, there is no further reduction possible.
6 plus 6 plus 63 plus 63 plus 36 plus 36 is equal to 210.
132