The number, 2.166, is expressed to the thousandth so there is no rounding to the thousandth.
8.924
It is 6.981 when rounded to the nearest thousandth
70.659
88.564
34921.000
0.370
145 is rounded to the nearest ones. 145 rounded to the nearest thousandth is 145.000
0.660
800.130
174.689
9.375
16526.000