We're dividing 78955573 by 351 
The aim is to understand the frequency of 351 in 78955573.

Moving on to step 1:
If we divide 7 by 351, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 351

Moving on to step 2:
When dividing 78 by 351, we get 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Include the next digit (9) from the dividend after 78, then repeat: 789 / 351

On to step 3:
351 goes into 789 2 times with a remainder of 87.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 87 after subtracting 702 from 789.
Bring next digit (5) of the dividend behind the 87 and repeat the process: 875 / 351

Advancing to step 4:
The number 351 fits into 875 2 times, leaving a remainder of 173.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we subtract 702 from 875, we get 173.
Grab the next digit (5) from the dividend, add it to 173, then carry on: 1735 / 351

On to step 5:
If we divide 1735 by 351, we get 4 and a remainder of 331.
The next digit of our result is 4. 
Result so far: 224.0
If we subtract 1404 from 1735, we get 331.
Bring next digit (5) of the dividend behind the 331 and repeat the process: 3315 / 351

Going ahead to step 6:
351 goes into 3315 9 times with a remainder of 156.
The number 9 becomes the next digit in our result. 
Result so far: 2249.0
Deduct 3159 from 3315 and we're left with 156.
Take the next digit (7) from the dividend and append it to 156, then repeat: 1567 / 351

On to step 7:
When dividing 1567 by 351, we get 4 with a remainder of 163.
Put 4 as the next digit of the answer. 
Result so far: 22494.0
If we take 1404 away from 1567, we end up with 163.
Bring next digit (3) of the dividend behind the 163 and repeat the process: 1633 / 351

Advancing to step 8:
351 can be fit into 1633 4 times, resulting in a remainder of 229.
The number 4 becomes the next digit in our result. 
Result so far: 224944.0
The remainder is 229 after subtracting 1404 from 1633.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Step 9:
2290 divided by 351 is 6 with a remainder of 184.
Put 6 as the next digit of the answer. 
Result so far: 224944.6
Subtract 2106 from 2290 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Step 10:
351 can be fit into 1840 5 times, resulting in a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 224944.65
Subtracting 1755 from 1840 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 11:
850 divided by 351 is 2 with a remainder of 148.
Write down 2 as next digit of the result. 
Result so far: 224944.652
If we take 702 away from 850, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Moving on to step 12:
1480 divided by 351 is 4 with a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 224944.6524
If we subtract 1404 from 1480, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 13:
If we divide 760 by 351, we get 2 and a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 224944.65242
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 14:
351 goes into 580 1 times with a remainder of 229.
Use 1 as the next digit of our solution. 
Result so far: 224944.652421
The remainder is 229 after subtracting 351 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

On to step 15:
When dividing 2290 by 351, we get 6 with a remainder of 184.
Record the quotient 6 as the next digit in the result. 
Result so far: 224944.6524216
Subtracting 2106 from 2290 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 16:
When dividing 1840 by 351, we get 5 with a remainder of 85.
Use 5 as the next digit of our solution. 
Result so far: 224944.65242165
The remainder is 85 after subtracting 1755 from 1840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

The final outcome is 224944.65242165, with a leftover of 8.5e-08.