4.4 kitkat: how to eliminate the colon and commas from the matrix that is similar (weight: 1.09kg, pieces: 112) and add spaces before the new line

Require each record 100 characters wide if the record size is 20 characters wide add 100-20 = 80 spaces before adding a new record.
The record format is Weight: 1.09 kg, Pieces: 112, Unit weight: 0.9 g, Date / Time: 12/20/2018: 12.27.54

and you need to like 1.09 kg, 112.0.9 g, 12/20/2018: 12.27.54 and add space before adding a new line