Let's divide 300402 by 91
We want to figure out the number of times 300402 can be divided by 91.

On to step 1:
The number 91 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 91

Let's proceed to step 2:
30 divided by 91 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 91

Going ahead to step 3:
If we divide 300 by 91, we get 3 and a remainder of 27.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 273 from 300, we get 27.
Fetch the next digit (4) from the dividend, attach it to 27 and continue: 274 / 91

Advancing to step 4:
91 goes into 274 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 33.0
Subtract 273 from 274 to get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 91

On to step 5:
The number 91 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 330.0
If we subtract 0 from 10, we get 10.
Include the next digit (2) from the dividend after 10, then repeat: 102 / 91

Let's proceed to step 6:
102 divided by 91 is 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 3301.0
Subtract 91 from 102 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 7:
The number 91 fits into 110 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 3301.1
If we take 91 away from 110, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 8:
When dividing 190 by 91, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 3301.12
If we subtract 182 from 190, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
If we divide 80 by 91, we get 0 and a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 3301.12
If we subtract 0 from 80, we 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.

On to step 10:
If we divide 800 by 91, we get 8 and a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 3301.1208
Subtract 728 from 800 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 11:
720 divided by 91 is 7 with a remainder of 83.
Use 7 as the next digit of our solution. 
Result so far: 3301.12087
Deduct 637 from 720 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 12:
830 divided by 91 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 3301.120879
If we take 819 away from 830, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 13:
110 divided by 91 is 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 3301.1208791
If we subtract 91 from 110, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 14:
190 divided by 91 is 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 3301.12087912
Deduct 182 from 190 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 3301.12087912 and a remainder of 8e-09.