I noticed our current mileage allowance is 44.5 cents per mile. However if you put 1 mile into the expense account spreadsheet, it rounds up to 45 cents. I had a trip where I drove 200 miles, which the form says = $89.
But - if I submit 200 separate expense account pages with 1 mile on each, I would get $90. I would be ahead $1 (90-89).