We divide 167889 by 91
The aim is to understand the frequency of 91 in 167889.

Step 1:
1 divided by 91 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 91

Moving on to step 2:
91 can be fit into 16 0 times, resulting in a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Take the next digit (7) from the dividend and append it to 16, then repeat: 167 / 91

Advancing to step 3:
91 can be fit into 167 1 times, resulting in a remainder of 76.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 91 from 167, we get 76.
Bring next digit (8) of the dividend behind the 76 and repeat the process: 768 / 91

Advancing to step 4:
91 can be fit into 768 8 times, resulting in a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we subtract 728 from 768, we get 40.
Bring next digit (8) of the dividend behind the 40 and repeat the process: 408 / 91

Going ahead to step 5:
When dividing 408 by 91, we get 4 with a remainder of 44.
Put 4 as the next digit of the answer. 
Result so far: 184.0
Deduct 364 from 408 and we're left with 44.
Take the next digit (9) from the dividend and append it to 44, then repeat: 449 / 91

Step 6:
When dividing 449 by 91, we get 4 with a remainder of 85.
The number 4 becomes the next digit in our result. 
Result so far: 1844.0
Subtract 364 from 449 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 7:
91 can be fit into 850 9 times, resulting in a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 1844.9
The remainder is 31 after subtracting 819 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 8:
The number 91 fits into 310 3 times, leaving a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 1844.93
The remainder is 37 after subtracting 273 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 9:
The number 91 fits into 370 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 1844.934
Subtracting 364 from 370 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
The number 91 fits into 60 0 times, leaving a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 1844.934
Deduct 0 from 60 and we're left with 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 11:
The number 91 fits into 600 6 times, leaving a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 1844.93406
If we take 546 away from 600, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 12:
91 goes into 540 5 times with a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 1844.934065
Subtract 455 from 540 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 13:
If we divide 850 by 91, we get 9 and a remainder of 31.
The next digit of our result is 9. 
Result so far: 1844.9340659
Deduct 819 from 850 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 14:
If we divide 310 by 91, we get 3 and a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 1844.93406593
Deduct 273 from 310 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The quotient of the division is 1844.93406593, and the remainder is 3.7e-08.