51231552 ÷ 350 
The aim is to understand the frequency of 350 in 51231552.

Going ahead to step 1:
The number 350 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 350

Going ahead to step 2:
If we divide 51 by 350, we get 0 and a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Bring next digit (2) of the dividend behind the 51 and repeat the process: 512 / 350

Step 3:
When dividing 512 by 350, we get 1 with a remainder of 162.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 162 after subtracting 350 from 512.
Include the next digit (3) from the dividend after 162, then repeat: 1623 / 350

Advancing to step 4:
350 can be fit into 1623 4 times, resulting in a remainder of 223.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtracting 1400 from 1623 leaves us with 223.
Append the next digit (1) from the dividend to 223 and continue with: 2231 / 350

On to step 5:
2231 divided by 350 is 6 with a remainder of 131.
Record the quotient 6 as the next digit in the result. 
Result so far: 146.0
Subtracting 2100 from 2231 leaves us with 131.
Bring next digit (5) of the dividend behind the 131 and repeat the process: 1315 / 350

Let's proceed to step 6:
When dividing 1315 by 350, we get 3 with a remainder of 265.
The next digit of our result is 3. 
Result so far: 1463.0
If we subtract 1050 from 1315, we get 265.
Include the next digit (5) from the dividend after 265, then repeat: 2655 / 350

Let's proceed to step 7:
350 can be fit into 2655 7 times, resulting in a remainder of 205.
The next digit of our result is 7. 
Result so far: 14637.0
The remainder is 205 after subtracting 2450 from 2655.
Append the next digit (2) from the dividend to 205 and continue with: 2052 / 350

Advancing to step 8:
350 goes into 2052 5 times with a remainder of 302.
The next digit of our result is 5. 
Result so far: 146375.0
Subtract 1750 from 2052 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Going ahead to step 9:
If we divide 3020 by 350, we get 8 and a remainder of 220.
Put 8 as the next digit of the answer. 
Result so far: 146375.8
Subtracting 2800 from 3020 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 10:
2200 divided by 350 is 6 with a remainder of 100.
Put 6 as the next digit of the answer. 
Result so far: 146375.86
If we subtract 2100 from 2200, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 11:
If we divide 1000 by 350, we get 2 and a remainder of 300.
The next digit of our result is 2. 
Result so far: 146375.862
If we subtract 700 from 1000, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 12:
If we divide 3000 by 350, we get 8 and a remainder of 200.
The number 8 becomes the next digit in our result. 
Result so far: 146375.8628
Subtract 2800 from 3000 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 13:
When dividing 2000 by 350, we get 5 with a remainder of 250.
Record the quotient 5 as the next digit in the result. 
Result so far: 146375.86285
The remainder is 250 after subtracting 1750 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 14:
350 can be fit into 2500 7 times, resulting in a remainder of 50.
The next digit of our result is 7. 
Result so far: 146375.862857
Deduct 2450 from 2500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 15:
When dividing 500 by 350, we get 1 with a remainder of 150.
Record the quotient 1 as the next digit in the result. 
Result so far: 146375.8628571
If we take 350 away from 500, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 16:
If we divide 1500 by 350, we get 4 and a remainder of 100.
The number 4 becomes the next digit in our result. 
Result so far: 146375.86285714
The remainder is 100 after subtracting 1400 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 146375.86285714 with a remainder of 1e-07.