We're dividing 15627737 by 552 
The aim is to understand the frequency of 552 in 15627737.

Step 1:
If we divide 1 by 552, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 552

Step 2:
552 can be fit into 15 0 times, resulting in a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Grab the next digit (6) from the dividend, add it to 15, then carry on: 156 / 552

Advancing to step 3:
When dividing 156 by 552, we get 0 with a remainder of 156.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 156 leaves us with 156.
Take the next digit (2) from the dividend and append it to 156, then repeat: 1562 / 552

On to step 4:
The number 552 fits into 1562 2 times, leaving a remainder of 458.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 1104 from 1562, we get 458.
Take the next digit (7) from the dividend and append it to 458, then repeat: 4587 / 552

Moving on to step 5:
552 can be fit into 4587 8 times, resulting in a remainder of 171.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Deduct 4416 from 4587 and we're left with 171.
Fetch the next digit (7) from the dividend, attach it to 171 and continue: 1717 / 552

On to step 6:
When dividing 1717 by 552, we get 3 with a remainder of 61.
The number 3 becomes the next digit in our result. 
Result so far: 283.0
Subtracting 1656 from 1717 leaves us with 61.
Take the next digit (3) from the dividend and append it to 61, then repeat: 613 / 552

On to step 7:
If we divide 613 by 552, we get 1 and a remainder of 61.
Put 1 as the next digit of the answer. 
Result so far: 2831.0
The remainder is 61 after subtracting 552 from 613.
Take the next digit (7) from the dividend and append it to 61, then repeat: 617 / 552

Advancing to step 8:
When dividing 617 by 552, we get 1 with a remainder of 65.
Record the quotient 1 as the next digit in the result. 
Result so far: 28311.0
Deduct 552 from 617 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 9:
If we divide 650 by 552, we get 1 and a remainder of 98.
Record the quotient 1 as the next digit in the result. 
Result so far: 28311.1
Subtract 552 from 650 to get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Moving on to step 10:
980 divided by 552 is 1 with a remainder of 428.
Put 1 as the next digit of the answer. 
Result so far: 28311.11
Subtracting 552 from 980 leaves us with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

The final outcome is 28311.11, with a leftover of 0.428.