Let's divide 54216986 by 435
The aim is to understand the frequency of 435 in 54216986.

Advancing to step 1:
If we divide 5 by 435, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 435

Advancing to step 2:
The number 435 fits into 54 0 times, leaving a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Bring next digit (2) of the dividend behind the 54 and repeat the process: 542 / 435

Moving on to step 3:
When dividing 542 by 435, we get 1 with a remainder of 107.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 435 from 542 leaves us with 107.
Take the next digit (1) from the dividend and append it to 107, then repeat: 1071 / 435

On to step 4:
The number 435 fits into 1071 2 times, leaving a remainder of 201.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 870 from 1071, we get 201.
Grab the next digit (6) from the dividend, add it to 201, then carry on: 2016 / 435

Let's proceed to step 5:
435 can be fit into 2016 4 times, resulting in a remainder of 276.
Use 4 as the next digit of our solution. 
Result so far: 124.0
Deduct 1740 from 2016 and we're left with 276.
Append the next digit (9) from the dividend to 276 and continue with: 2769 / 435

Let's proceed to step 6:
2769 divided by 435 is 6 with a remainder of 159.
Record the quotient 6 as the next digit in the result. 
Result so far: 1246.0
Subtracting 2610 from 2769 leaves us with 159.
Take the next digit (8) from the dividend and append it to 159, then repeat: 1598 / 435

Let's proceed to step 7:
When dividing 1598 by 435, we get 3 with a remainder of 293.
Put 3 as the next digit of the answer. 
Result so far: 12463.0
If we take 1305 away from 1598, we end up with 293.
Append the next digit (6) from the dividend to 293 and continue with: 2936 / 435

Let's proceed to step 8:
The number 435 fits into 2936 6 times, leaving a remainder of 326.
The next digit of our result is 6. 
Result so far: 124636.0
If we subtract 2610 from 2936, we get 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

On to step 9:
3260 divided by 435 is 7 with a remainder of 215.
Record the quotient 7 as the next digit in the result. 
Result so far: 124636.7
Subtract 3045 from 3260 to get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

On to step 10:
435 can be fit into 2150 4 times, resulting in a remainder of 410.
Use 4 as the next digit of our solution. 
Result so far: 124636.74
The remainder is 410 after subtracting 1740 from 2150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Step 11:
When dividing 4100 by 435, we get 9 with a remainder of 185.
The next digit of our result is 9. 
Result so far: 124636.749
The remainder is 185 after subtracting 3915 from 4100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 12:
435 goes into 1850 4 times with a remainder of 110.
Use 4 as the next digit of our solution. 
Result so far: 124636.7494
If we take 1740 away from 1850, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 13:
435 goes into 1100 2 times with a remainder of 230.
The next digit of our result is 2. 
Result so far: 124636.74942
The remainder is 230 after subtracting 870 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 14:
435 goes into 2300 5 times with a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 124636.749425
Deduct 2175 from 2300 and we're left with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 15:
If we divide 1250 by 435, we get 2 and a remainder of 380.
Put 2 as the next digit of the answer. 
Result so far: 124636.7494252
Deduct 870 from 1250 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 16:
3800 divided by 435 is 8 with a remainder of 320.
The number 8 becomes the next digit in our result. 
Result so far: 124636.74942528
Subtracting 3480 from 3800 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

After the division, we end up with 124636.74942528 and a remainder of 3.2e-07.