It is: 57/1000 and as a decimal it is 0.057
2.550
It is: 57 = LVII
It is: 57% = 57/100 which can't be reduced any further
8/57 = 0.140351 (rounded).
21/57 = 7/19
0.001
It is: 5.457
2.550
No.
You would round down: 2.365
It is: 57 = LVII
57 = fifty-seven
57% = 0.57
3 x 19 = 57
57 in Roman numerals is LVII
5.7 is 57 tenths.
It is: 57% = 57/100 which can't be reduced any further