2.550
It is: 57 = LVII
It is: 57% = 57/100 which can't be reduced any further
8/57 = 0.140351 (rounded).
17/57 written as a decimal is 0.298
0.001
It is: 5.457
No.
2.550
You would round down: 2.365
57 = fifty-seven
It is: 57 = LVII
57% = 0.57
57 in Roman numerals is LVII
3 x 19 = 57
5.7 is 57 tenths.
It is: 57% = 57/100 which can't be reduced any further