well. 5-2=3 so 25x3= 75
75 divided by 2 to the 3rd +6 +2 to the 4th=
75 divided by 6+6+8=
75 divided by 20= 3.75
3.75 divided by 4-4+ 4 to the 3rd +20x3
3.75 divided by 12+60
12+60= 72
3.75 divided by 72= 0.052
0.052 x 4 to the 2nd + 3 to the 5th divided by 3=
0.052 x 16 + 243 divided by 3=
0.82 + 243 divided by 3=
243.82 divided by 3 = 81.27
divided by 10-1-8
10-1=9-8=1
divided by 1= 81.27