We look at the division of 56919394 by 639 
The aim is to understand the frequency of 639 in 56919394.

On to step 1:
The number 639 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 639

Step 2:
639 can be fit into 56 0 times, resulting in a remainder of 56.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 56 and we're left with 56.
Append the next digit (9) from the dividend to 56 and continue with: 569 / 639

Let's proceed to step 3:
The number 639 fits into 569 0 times, leaving a remainder of 569.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 569 after subtracting 0 from 569.
Append the next digit (1) from the dividend to 569 and continue with: 5691 / 639

On to step 4:
639 can be fit into 5691 8 times, resulting in a remainder of 579.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 5112 from 5691 and we're left with 579.
Take the next digit (9) from the dividend and append it to 579, then repeat: 5799 / 639

On to step 5:
639 can be fit into 5799 9 times, resulting in a remainder of 48.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
If we take 5751 away from 5799, we end up with 48.
Append the next digit (3) from the dividend to 48 and continue with: 483 / 639

Step 6:
483 divided by 639 is 0 with a remainder of 483.
Put 0 as the next digit of the answer. 
Result so far: 890.0
If we take 0 away from 483, we end up with 483.
Append the next digit (9) from the dividend to 483 and continue with: 4839 / 639

Moving on to step 7:
4839 divided by 639 is 7 with a remainder of 366.
Put 7 as the next digit of the answer. 
Result so far: 8907.0
Subtracting 4473 from 4839 leaves us with 366.
Fetch the next digit (4) from the dividend, attach it to 366 and continue: 3664 / 639

Let's proceed to step 8:
When dividing 3664 by 639, we get 5 with a remainder of 469.
Use 5 as the next digit of our solution. 
Result so far: 89075.0
If we subtract 3195 from 3664, we get 469.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4690, and continue the process.

On to step 9:
639 can be fit into 4690 7 times, resulting in a remainder of 217.
Put 7 as the next digit of the answer. 
Result so far: 89075.7
If we take 4473 away from 4690, we end up with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Let's proceed to step 10:
The number 639 fits into 2170 3 times, leaving a remainder of 253.
Record the quotient 3 as the next digit in the result. 
Result so far: 89075.73
Subtracting 1917 from 2170 leaves us with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Moving on to step 11:
639 can be fit into 2530 3 times, resulting in a remainder of 613.
Record the quotient 3 as the next digit in the result. 
Result so far: 89075.733
Subtract 1917 from 2530 to get 613.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6130, and continue the process.

The final outcome is 89075.733, with a leftover of 0.0613.