We look at the division of 386920 by 91 
Let's see how many times 91 fits into 386920.

On to step 1:
If we divide 3 by 91, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 91

Going ahead to step 2:
When dividing 38 by 91, we get 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Fetch the next digit (6) from the dividend, attach it to 38 and continue: 386 / 91

Let's proceed to step 3:
91 can be fit into 386 4 times, resulting in a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 364 from 386, we get 22.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 91

On to step 4:
The number 91 fits into 229 2 times, leaving a remainder of 47.
Use 2 as the next digit of our solution. 
Result so far: 42.0
The remainder is 47 after subtracting 182 from 229.
Take the next digit (2) from the dividend and append it to 47, then repeat: 472 / 91

On to step 5:
91 can be fit into 472 5 times, resulting in a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 425.0
Subtracting 455 from 472 leaves us with 17.
Grab the next digit (0) from the dividend, add it to 17, then carry on: 170 / 91

On to step 6:
170 divided by 91 is 1 with a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 4251.0
If we subtract 91 from 170, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 7:
91 goes into 790 8 times with a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 4251.8
Deduct 728 from 790 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 8:
91 goes into 620 6 times with a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 4251.86
If we subtract 546 from 620, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 9:
The number 91 fits into 740 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 4251.868
If we subtract 728 from 740, we get 12.
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 10:
91 goes into 120 1 times with a remainder of 29.
The next digit of our result is 1. 
Result so far: 4251.8681
The remainder is 29 after subtracting 91 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 11:
91 can be fit into 290 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 4251.86813
Deduct 273 from 290 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 12:
The number 91 fits into 170 1 times, leaving a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 4251.868131
Deduct 91 from 170 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 13:
790 divided by 91 is 8 with a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 4251.8681318
Deduct 728 from 790 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 14:
91 goes into 620 6 times with a remainder of 74.
The number 6 becomes the next digit in our result. 
Result so far: 4251.86813186
The remainder is 74 after subtracting 546 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

The final outcome is 4251.86813186, with a leftover of 7.4e-08.