2/7 is a recurring decimal; it repeats 6 digits:
2/7 = 0.285714285714...
It is 0.277... (7s repeating).
There can be a maximum of 2 electrons in the 7s orbital, following the Pauli exclusion principle which states that each orbital can hold a maximum of 2 electrons with opposite spins.
19 over 2 as a decimal = 9.5
2 over 9 as a decimal = 0.2222 2/9: = 2 ÷ 9 = 0.2222 in decimal
8 over 2 as a decimal = 4.0
15 over 2 as a decimal is 8.5
2 over 2 is 1. As a decimal, it is still 1.
-3 over 2 converted to a decimal is -1.5
1/360 = 0.002777... (7s repeating).
1 over 2 = 0.5 as a decimal and 50% as a percent
8 and 2 over 3 in a decimal is expressed as 8.6666 . . .
13s - 2