51979361 ÷ 349 
The aim is to understand the frequency of 349 in 51979361.

Going ahead to step 1:
349 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 349

Let's proceed to step 2:
51 divided by 349 is 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Fetch the next digit (9) from the dividend, attach it to 51 and continue: 519 / 349

Step 3:
If we divide 519 by 349, we get 1 and a remainder of 170.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 349 from 519 to get 170.
Bring next digit (7) of the dividend behind the 170 and repeat the process: 1707 / 349

Advancing to step 4:
The number 349 fits into 1707 4 times, leaving a remainder of 311.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 1396 from 1707 and we're left with 311.
Include the next digit (9) from the dividend after 311, then repeat: 3119 / 349

Advancing to step 5:
349 goes into 3119 8 times with a remainder of 327.
Put 8 as the next digit of the answer. 
Result so far: 148.0
If we subtract 2792 from 3119, we get 327.
Fetch the next digit (3) from the dividend, attach it to 327 and continue: 3273 / 349

On to step 6:
349 goes into 3273 9 times with a remainder of 132.
Write down 9 as next digit of the result. 
Result so far: 1489.0
Deduct 3141 from 3273 and we're left with 132.
Grab the next digit (6) from the dividend, add it to 132, then carry on: 1326 / 349

Going ahead to step 7:
1326 divided by 349 is 3 with a remainder of 279.
Write down 3 as next digit of the result. 
Result so far: 14893.0
Deduct 1047 from 1326 and we're left with 279.
Fetch the next digit (1) from the dividend, attach it to 279 and continue: 2791 / 349

On to step 8:
If we divide 2791 by 349, we get 7 and a remainder of 348.
Record the quotient 7 as the next digit in the result. 
Result so far: 148937.0
Subtracting 2443 from 2791 leaves us with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Going ahead to step 9:
If we divide 3480 by 349, we get 9 and a remainder of 339.
Put 9 as the next digit of the answer. 
Result so far: 148937.9
Subtracting 3141 from 3480 leaves us with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Advancing to step 10:
When dividing 3390 by 349, we get 9 with a remainder of 249.
Record the quotient 9 as the next digit in the result. 
Result so far: 148937.99
Subtract 3141 from 3390 to get 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

The quotient of the division is 148937.99, and the remainder is 0.249.