We look at the division of 421658 by 85 
Let's see how many times 85 fits into 421658.

Moving on to step 1:
4 divided by 85 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 85

Going ahead to step 2:
85 goes into 42 0 times with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 85

Advancing to step 3:
421 divided by 85 is 4 with a remainder of 81.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 81 after subtracting 340 from 421.
Grab the next digit (6) from the dividend, add it to 81, then carry on: 816 / 85

On to step 4:
When dividing 816 by 85, we get 9 with a remainder of 51.
The next digit of our result is 9. 
Result so far: 49.0
Subtract 765 from 816 to get 51.
Take the next digit (5) from the dividend and append it to 51, then repeat: 515 / 85

Advancing to step 5:
When dividing 515 by 85, we get 6 with a remainder of 5.
The number 6 becomes the next digit in our result. 
Result so far: 496.0
If we subtract 510 from 515, we get 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 85

Step 6:
58 divided by 85 is 0 with a remainder of 58.
Use 0 as the next digit of our solution. 
Result so far: 4960.0
Subtract 0 from 58 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 7:
If we divide 580 by 85, we get 6 and a remainder of 70.
Write down 6 as next digit of the result. 
Result so far: 4960.6
If we take 510 away from 580, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 8:
If we divide 700 by 85, we get 8 and a remainder of 20.
The next digit of our result is 8. 
Result so far: 4960.68
Subtracting 680 from 700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
When dividing 200 by 85, we get 2 with a remainder of 30.
Write down 2 as next digit of the result. 
Result so far: 4960.682
Deduct 170 from 200 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
85 goes into 300 3 times with a remainder of 45.
Use 3 as the next digit of our solution. 
Result so far: 4960.6823
Deduct 255 from 300 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 11:
When dividing 450 by 85, we get 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 4960.68235
Subtracting 425 from 450 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 12:
If we divide 250 by 85, we get 2 and a remainder of 80.
The next digit of our result is 2. 
Result so far: 4960.682352
Subtract 170 from 250 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 13:
800 divided by 85 is 9 with a remainder of 35.
The next digit of our result is 9. 
Result so far: 4960.6823529
If we take 765 away from 800, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 14:
When dividing 350 by 85, we get 4 with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 4960.68235294
If we take 340 away from 350, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 4960.68235294 and a remainder of 1e-08.