The sum of 356 plus 433 is 789.
One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.
Assuming both locations in New South Wales, Australia: 574 kilometers/356 miles 6 hours 5 minutes
-356
5% of 574 = 5% * 574 = 0.05 * 574 = 28.7
7% of 574 = 7% * 574 = 0.07 * 574 = 40.18
Sum: 1 2 3 6 7 14 21 41 42 82 123 246 287 574 861 1722 = 4,032
The numbers are 352, 354, 356, 358 and 360.
83 + 87 + 91 + 95 = 356, 356 / 4 = 89. The average of those 4 numbers is 89. You add all of the numbers together and then divide that sum by the number of values.
574
574
It is: DLXXIIII = 574 In today's notation: DLXXIV = 574