We look at the division of 370644 by 86 
We want to figure out the number of times 370644 can be divided by 86.

Going ahead to step 1:
86 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 86

Going ahead to step 2:
When dividing 37 by 86, we get 0 with a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 37 and we're left with 37.
Include the next digit (0) from the dividend after 37, then repeat: 370 / 86

Advancing to step 3:
86 can be fit into 370 4 times, resulting in a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 344 away from 370, we end up with 26.
Grab the next digit (6) from the dividend, add it to 26, then carry on: 266 / 86

Step 4:
266 divided by 86 is 3 with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 43.0
Subtract 258 from 266 to get 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 86

Step 5:
The number 86 fits into 84 0 times, leaving a remainder of 84.
The next digit of our result is 0. 
Result so far: 430.0
If we subtract 0 from 84, we get 84.
Grab the next digit (4) from the dividend, add it to 84, then carry on: 844 / 86

On to step 6:
If we divide 844 by 86, we get 9 and a remainder of 70.
The number 9 becomes the next digit in our result. 
Result so far: 4309.0
Subtract 774 from 844 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 7:
86 goes into 700 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 4309.8
The remainder is 12 after subtracting 688 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
The number 86 fits into 120 1 times, leaving a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 4309.81
Deduct 86 from 120 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 9:
86 can be fit into 340 3 times, resulting in a remainder of 82.
Use 3 as the next digit of our solution. 
Result so far: 4309.813
If we take 258 away from 340, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 10:
86 can be fit into 820 9 times, resulting in a remainder of 46.
The next digit of our result is 9. 
Result so far: 4309.8139
Deduct 774 from 820 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 11:
460 divided by 86 is 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 4309.81395
The remainder is 30 after subtracting 430 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
300 divided by 86 is 3 with a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 4309.813953
If we take 258 away from 300, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 13:
When dividing 420 by 86, we get 4 with a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 4309.8139534
If we take 344 away from 420, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 14:
When dividing 760 by 86, we get 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 4309.81395348
Subtracting 688 from 760 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 4309.81395348, with a leftover of 7.2e-08.