You did typing mistake in place of electronic,elctrons will be there
Here is the procedure to calculate
Charge q = ne
Here q is the charge given
n is the number of electron or magnitude of number of electron
e is the charge of electron which has value e = 1.6022 × 10-19 coulombs
If we know q than using formula we can calculate n value
n = q/e
n = q/(1.6022 × 10-19)
n = 6.2414 × 1018 *q
sibstitute the value of q you will get number of electron n