4^3 × 5^2 + 225^1 × 12^2 - 54^0 =
64 × 25 + 225 × 1 44 - 1 =
1 600 + 32 400 - 1 =
33 999
_______
3^17 × 7^17 - 21^17 =
( 3 × 7)^17 - 21^17 =
21^17 - 21^17 =
0
___
3^18 × 8^18 : ( 6^16 × 4^16) =
( 3 × 8)^18 : (6 × 4):16 =
24^18 : 24^16 =
24^(18 - 16) =
24^2 =
576
_____
