9/4.05 = 2.2 recurring (that is, 2.2222...)
45
2.222222222222222
405
9
1, 3, 5, 9, 15, 27, 45, 81, 135, 405
405
0.0617
405
405 divided by 2 is 202.5
25 divided by 405 is 0.0617283950617
The LCM is 405.
81
67.5
If you're adding them, 405 + 9 = 414 If you're subtracting them, 405 - 9 = 396 If you're multiplying them, 405 x 10 = 4050 If you're dividing them, 400/8 = 50