You have:
To write a mixed number in decimal form you:
1. You take the whole number as the whole part in the decimal (the number before the comma.
2. You divide the numerator into the denominator to get the decimal part (the numbers after the comma)
1. The whole number is 4
2. 3 divided into 5 is: 0,6
Then so, the decimal number is: 4,6