Let's divide 63870524 by 551
The aim is to understand the frequency of 551 in 63870524.

On to step 1:
6 divided by 551 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 551

Let's proceed to step 2:
63 divided by 551 is 0 with a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Fetch the next digit (8) from the dividend, attach it to 63 and continue: 638 / 551

Moving on to step 3:
638 divided by 551 is 1 with a remainder of 87.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 551 from 638, we get 87.
Take the next digit (7) from the dividend and append it to 87, then repeat: 877 / 551

Step 4:
If we divide 877 by 551, we get 1 and a remainder of 326.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we take 551 away from 877, we end up with 326.
Fetch the next digit (0) from the dividend, attach it to 326 and continue: 3260 / 551

Going ahead to step 5:
3260 divided by 551 is 5 with a remainder of 505.
The next digit of our result is 5. 
Result so far: 115.0
Subtract 2755 from 3260 to get 505.
Take the next digit (5) from the dividend and append it to 505, then repeat: 5055 / 551

Advancing to step 6:
551 goes into 5055 9 times with a remainder of 96.
Put 9 as the next digit of the answer. 
Result so far: 1159.0
Subtract 4959 from 5055 to get 96.
Include the next digit (2) from the dividend after 96, then repeat: 962 / 551

Going ahead to step 7:
962 divided by 551 is 1 with a remainder of 411.
Record the quotient 1 as the next digit in the result. 
Result so far: 11591.0
If we subtract 551 from 962, we get 411.
Bring next digit (4) of the dividend behind the 411 and repeat the process: 4114 / 551

Advancing to step 8:
When dividing 4114 by 551, we get 7 with a remainder of 257.
The number 7 becomes the next digit in our result. 
Result so far: 115917.0
The remainder is 257 after subtracting 3857 from 4114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

On to step 9:
551 can be fit into 2570 4 times, resulting in a remainder of 366.
Put 4 as the next digit of the answer. 
Result so far: 115917.4
If we subtract 2204 from 2570, we get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Advancing to step 10:
When dividing 3660 by 551, we get 6 with a remainder of 354.
Write down 6 as next digit of the result. 
Result so far: 115917.46
Subtract 3306 from 3660 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Let's proceed to step 11:
551 goes into 3540 6 times with a remainder of 234.
Use 6 as the next digit of our solution. 
Result so far: 115917.466
The remainder is 234 after subtracting 3306 from 3540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

The final result is 115917.466 with a remainder of 0.0234.