63894426 ÷ 604 
The aim is to understand the frequency of 604 in 63894426.

Step 1:
If we divide 6 by 604, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 604

Step 2:
If we divide 63 by 604, we get 0 and a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 604

Advancing to step 3:
When dividing 638 by 604, we get 1 with a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 34 after subtracting 604 from 638.
Fetch the next digit (9) from the dividend, attach it to 34 and continue: 349 / 604

Advancing to step 4:
The number 604 fits into 349 0 times, leaving a remainder of 349.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 349, we end up with 349.
Fetch the next digit (4) from the dividend, attach it to 349 and continue: 3494 / 604

On to step 5:
If we divide 3494 by 604, we get 5 and a remainder of 474.
Use 5 as the next digit of our solution. 
Result so far: 105.0
Subtracting 3020 from 3494 leaves us with 474.
Append the next digit (4) from the dividend to 474 and continue with: 4744 / 604

Advancing to step 6:
604 goes into 4744 7 times with a remainder of 516.
Write down 7 as next digit of the result. 
Result so far: 1057.0
If we subtract 4228 from 4744, we get 516.
Include the next digit (2) from the dividend after 516, then repeat: 5162 / 604

Step 7:
5162 divided by 604 is 8 with a remainder of 330.
Record the quotient 8 as the next digit in the result. 
Result so far: 10578.0
Subtracting 4832 from 5162 leaves us with 330.
Include the next digit (6) from the dividend after 330, then repeat: 3306 / 604

Moving on to step 8:
The number 604 fits into 3306 5 times, leaving a remainder of 286.
The number 5 becomes the next digit in our result. 
Result so far: 105785.0
If we take 3020 away from 3306, we end up with 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Moving on to step 9:
The number 604 fits into 2860 4 times, leaving a remainder of 444.
The next digit of our result is 4. 
Result so far: 105785.4
Deduct 2416 from 2860 and we're left with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Let's proceed to step 10:
604 can be fit into 4440 7 times, resulting in a remainder of 212.
Record the quotient 7 as the next digit in the result. 
Result so far: 105785.47
If we take 4228 away from 4440, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Step 11:
When dividing 2120 by 604, we get 3 with a remainder of 308.
Write down 3 as next digit of the result. 
Result so far: 105785.473
Subtracting 1812 from 2120 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Going ahead to step 12:
The number 604 fits into 3080 5 times, leaving a remainder of 60.
Record the quotient 5 as the next digit in the result. 
Result so far: 105785.4735
If we take 3020 away from 3080, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
The number 604 fits into 600 0 times, leaving a remainder of 600.
Record the quotient 0 as the next digit in the result. 
Result so far: 105785.4735
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 14:
604 goes into 6000 9 times with a remainder of 564.
Write down 9 as next digit of the result. 
Result so far: 105785.473509
If we subtract 5436 from 6000, we get 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Advancing to step 15:
The number 604 fits into 5640 9 times, leaving a remainder of 204.
Record the quotient 9 as the next digit in the result. 
Result so far: 105785.4735099
Subtract 5436 from 5640 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

The quotient of the division is 105785.4735099, and the remainder is 2.04e-06.