61380321 ÷ 349 
The aim is to understand the frequency of 349 in 61380321.

Let's proceed to step 1:
If we divide 6 by 349, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 349

On to step 2:
The number 349 fits into 61 0 times, leaving a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 61 leaves us with 61.
Include the next digit (3) from the dividend after 61, then repeat: 613 / 349

Moving on to step 3:
349 can be fit into 613 1 times, resulting in a remainder of 264.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 349 from 613 leaves us with 264.
Append the next digit (8) from the dividend to 264 and continue with: 2648 / 349

Advancing to step 4:
2648 divided by 349 is 7 with a remainder of 205.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 2443 from 2648 and we're left with 205.
Bring next digit (0) of the dividend behind the 205 and repeat the process: 2050 / 349

Moving on to step 5:
If we divide 2050 by 349, we get 5 and a remainder of 305.
Record the quotient 5 as the next digit in the result. 
Result so far: 175.0
Subtract 1745 from 2050 to get 305.
Fetch the next digit (3) from the dividend, attach it to 305 and continue: 3053 / 349

Going ahead to step 6:
When dividing 3053 by 349, we get 8 with a remainder of 261.
Record the quotient 8 as the next digit in the result. 
Result so far: 1758.0
If we subtract 2792 from 3053, we get 261.
Fetch the next digit (2) from the dividend, attach it to 261 and continue: 2612 / 349

Moving on to step 7:
If we divide 2612 by 349, we get 7 and a remainder of 169.
The number 7 becomes the next digit in our result. 
Result so far: 17587.0
If we subtract 2443 from 2612, we get 169.
Append the next digit (1) from the dividend to 169 and continue with: 1691 / 349

Let's proceed to step 8:
If we divide 1691 by 349, we get 4 and a remainder of 295.
The next digit of our result is 4. 
Result so far: 175874.0
Deduct 1396 from 1691 and we're left with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Going ahead to step 9:
If we divide 2950 by 349, we get 8 and a remainder of 158.
The number 8 becomes the next digit in our result. 
Result so far: 175874.8
If we take 2792 away from 2950, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Step 10:
If we divide 1580 by 349, we get 4 and a remainder of 184.
The next digit of our result is 4. 
Result so far: 175874.84
The remainder is 184 after subtracting 1396 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Step 11:
349 goes into 1840 5 times with a remainder of 95.
Use 5 as the next digit of our solution. 
Result so far: 175874.845
Subtract 1745 from 1840 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Going ahead to step 12:
349 goes into 950 2 times with a remainder of 252.
Record the quotient 2 as the next digit in the result. 
Result so far: 175874.8452
Subtracting 698 from 950 leaves us with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Going ahead to step 13:
349 can be fit into 2520 7 times, resulting in a remainder of 77.
Record the quotient 7 as the next digit in the result. 
Result so far: 175874.84527
If we take 2443 away from 2520, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 14:
If we divide 770 by 349, we get 2 and a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 175874.845272
Deduct 698 from 770 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 15:
If we divide 720 by 349, we get 2 and a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 175874.8452722
Subtracting 698 from 720 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

In conclusion, the division gives 175874.8452722 with a balance of 2.2e-07.