It is 8 seconds. A decimal representation does not imply a change in the measurement units.
You would write five and eight hundreds like... 5.08
0.038
8.004
3.8
Eight and eight hundredths in a decimal is 8.08
eight tenths as a decimal = 0.8
8.08
148.448
Seven and eight tenths in a decimal is 7.8.
eighteen and eight hundredths = 18.08 in decimal
I think 8.032
418.0015