We divide 51065553 by 991
The aim is to understand the frequency of 991 in 51065553.

Let's proceed to step 1:
5 divided by 991 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 991

Going ahead to step 2:
The number 991 fits into 51 0 times, leaving a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 991

Going ahead to step 3:
991 can be fit into 510 0 times, resulting in a remainder of 510.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 510 to get 510.
Append the next digit (6) from the dividend to 510 and continue with: 5106 / 991

Step 4:
When dividing 5106 by 991, we get 5 with a remainder of 151.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 4955 from 5106 to get 151.
Append the next digit (5) from the dividend to 151 and continue with: 1515 / 991

Going ahead to step 5:
991 can be fit into 1515 1 times, resulting in a remainder of 524.
Write down 1 as next digit of the result. 
Result so far: 51.0
If we take 991 away from 1515, we end up with 524.
Include the next digit (5) from the dividend after 524, then repeat: 5245 / 991

Going ahead to step 6:
When dividing 5245 by 991, we get 5 with a remainder of 290.
Put 5 as the next digit of the answer. 
Result so far: 515.0
Subtract 4955 from 5245 to get 290.
Take the next digit (5) from the dividend and append it to 290, then repeat: 2905 / 991

Step 7:
The number 991 fits into 2905 2 times, leaving a remainder of 923.
Use 2 as the next digit of our solution. 
Result so far: 5152.0
If we take 1982 away from 2905, we end up with 923.
Include the next digit (3) from the dividend after 923, then repeat: 9233 / 991

Step 8:
991 goes into 9233 9 times with a remainder of 314.
Write down 9 as next digit of the result. 
Result so far: 51529.0
If we take 8919 away from 9233, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

On to step 9:
991 goes into 3140 3 times with a remainder of 167.
Write down 3 as next digit of the result. 
Result so far: 51529.3
If we subtract 2973 from 3140, we get 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

On to step 10:
If we divide 1670 by 991, we get 1 and a remainder of 679.
Record the quotient 1 as the next digit in the result. 
Result so far: 51529.31
Deduct 991 from 1670 and we're left with 679.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6790, and continue the process.

Moving on to step 11:
When dividing 6790 by 991, we get 6 with a remainder of 844.
Use 6 as the next digit of our solution. 
Result so far: 51529.316
If we subtract 5946 from 6790, we get 844.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8440, and continue the process.

On to step 12:
991 goes into 8440 8 times with a remainder of 512.
Record the quotient 8 as the next digit in the result. 
Result so far: 51529.3168
If we take 7928 away from 8440, we end up with 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Step 13:
The number 991 fits into 5120 5 times, leaving a remainder of 165.
The next digit of our result is 5. 
Result so far: 51529.31685
Subtract 4955 from 5120 to get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 14:
1650 divided by 991 is 1 with a remainder of 659.
Record the quotient 1 as the next digit in the result. 
Result so far: 51529.316851
Subtracting 991 from 1650 leaves us with 659.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6590, and continue the process.

Let's proceed to step 15:
6590 divided by 991 is 6 with a remainder of 644.
The number 6 becomes the next digit in our result. 
Result so far: 51529.3168516
Deduct 5946 from 6590 and we're left with 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Going ahead to step 16:
The number 991 fits into 6440 6 times, leaving a remainder of 494.
Use 6 as the next digit of our solution. 
Result so far: 51529.31685166
Deduct 5946 from 6440 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

In conclusion, the division gives 51529.31685166 with a balance of 4.94e-07.