days perdiem total
1 50 50
2 50 100
3 50 125
4 50 175

my formula:
=(B3*0.75)*(A3-2)+(A3-2)*B3

the per diem rate i am trying to get is for travel, the 1st and last day of
travel is 75% of the per diem rate and the days in between are at 100%, i am
trying to get this formula to calculate for 1, 2, and 3 or more days this
formula only does it correctly for 3 or more days, 1 and 2 days of per diem
is calculated at 75%, is this possible