We're dividing 443121 by 86 
We want to figure out the number of times 443121 can be divided by 86.

Moving on to step 1:
86 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 86

Let's proceed to step 2:
If we divide 44 by 86, we get 0 and a remainder of 44.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 44 to get 44.
Fetch the next digit (3) from the dividend, attach it to 44 and continue: 443 / 86

Going ahead to step 3:
86 goes into 443 5 times with a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 13 after subtracting 430 from 443.
Fetch the next digit (1) from the dividend, attach it to 13 and continue: 131 / 86

On to step 4:
131 divided by 86 is 1 with a remainder of 45.
Use 1 as the next digit of our solution. 
Result so far: 51.0
If we take 86 away from 131, we end up with 45.
Bring next digit (2) of the dividend behind the 45 and repeat the process: 452 / 86

Let's proceed to step 5:
When dividing 452 by 86, we get 5 with a remainder of 22.
The next digit of our result is 5. 
Result so far: 515.0
Subtracting 430 from 452 leaves us with 22.
Grab the next digit (1) from the dividend, add it to 22, then carry on: 221 / 86

Going ahead to step 6:
If we divide 221 by 86, we get 2 and a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 5152.0
The remainder is 49 after subtracting 172 from 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 7:
86 goes into 490 5 times with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 5152.5
If we subtract 430 from 490, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
600 divided by 86 is 6 with a remainder of 84.
Use 6 as the next digit of our solution. 
Result so far: 5152.56
If we take 516 away from 600, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 9:
The number 86 fits into 840 9 times, leaving a remainder of 66.
The next digit of our result is 9. 
Result so far: 5152.569
If we take 774 away from 840, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 10:
The number 86 fits into 660 7 times, leaving a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 5152.5697
Subtract 602 from 660 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.

On to step 11:
86 goes into 580 6 times with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 5152.56976
Deduct 516 from 580 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 12:
When dividing 640 by 86, we get 7 with a remainder of 38.
The next digit of our result is 7. 
Result so far: 5152.569767
Subtracting 602 from 640 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 13:
380 divided by 86 is 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 5152.5697674
Subtracting 344 from 380 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 14:
The number 86 fits into 360 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 5152.56976744
If we take 344 away from 360, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final result is 5152.56976744 with a remainder of 1.6e-08.