31569378 ÷ 991 
The aim is to understand the frequency of 991 in 31569378.

Moving on to step 1:
991 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.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 991

Moving on to step 2:
If we divide 31 by 991, we get 0 and a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Include the next digit (5) from the dividend after 31, then repeat: 315 / 991

Step 3:
991 can be fit into 315 0 times, resulting in a remainder of 315.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 315, we end up with 315.
Take the next digit (6) from the dividend and append it to 315, then repeat: 3156 / 991

Advancing to step 4:
991 can be fit into 3156 3 times, resulting in a remainder of 183.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 2973 from 3156 to get 183.
Bring next digit (9) of the dividend behind the 183 and repeat the process: 1839 / 991

Advancing to step 5:
The number 991 fits into 1839 1 times, leaving a remainder of 848.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Deduct 991 from 1839 and we're left with 848.
Bring next digit (3) of the dividend behind the 848 and repeat the process: 8483 / 991

Going ahead to step 6:
When dividing 8483 by 991, we get 8 with a remainder of 555.
Record the quotient 8 as the next digit in the result. 
Result so far: 318.0
Deduct 7928 from 8483 and we're left with 555.
Fetch the next digit (7) from the dividend, attach it to 555 and continue: 5557 / 991

Moving on to step 7:
The number 991 fits into 5557 5 times, leaving a remainder of 602.
Use 5 as the next digit of our solution. 
Result so far: 3185.0
Subtract 4955 from 5557 to get 602.
Bring next digit (8) of the dividend behind the 602 and repeat the process: 6028 / 991

On to step 8:
The number 991 fits into 6028 6 times, leaving a remainder of 82.
Record the quotient 6 as the next digit in the result. 
Result so far: 31856.0
If we subtract 5946 from 6028, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 9:
The number 991 fits into 820 0 times, leaving a remainder of 820.
Write down 0 as next digit of the result. 
Result so far: 31856.0
Subtract 0 from 820 to get 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8200, and continue the process.

Step 10:
The number 991 fits into 8200 8 times, leaving a remainder of 272.
Record the quotient 8 as the next digit in the result. 
Result so far: 31856.08
Deduct 7928 from 8200 and we're left with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 11:
If we divide 2720 by 991, we get 2 and a remainder of 738.
Use 2 as the next digit of our solution. 
Result so far: 31856.082
If we take 1982 away from 2720, we end up with 738.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

Advancing to step 12:
991 can be fit into 7380 7 times, resulting in a remainder of 443.
Use 7 as the next digit of our solution. 
Result so far: 31856.0827
Deduct 6937 from 7380 and we're left with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Moving on to step 13:
When dividing 4430 by 991, we get 4 with a remainder of 466.
The number 4 becomes the next digit in our result. 
Result so far: 31856.08274
The remainder is 466 after subtracting 3964 from 4430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Moving on to step 14:
4660 divided by 991 is 4 with a remainder of 696.
Record the quotient 4 as the next digit in the result. 
Result so far: 31856.082744
If we take 3964 away from 4660, we end up with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Our division results in 31856.082744 with a remaining 6.96e-05.