69131257 divided by 642 
The aim is to understand the frequency of 642 in 69131257.

Moving on to step 1:
When dividing 6 by 642, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 642

Let's proceed to step 2:
If we divide 69 by 642, we get 0 and a remainder of 69.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 69 to get 69.
Bring next digit (1) of the dividend behind the 69 and repeat the process: 691 / 642

Step 3:
642 goes into 691 1 times with a remainder of 49.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 642 from 691 to get 49.
Append the next digit (3) from the dividend to 49 and continue with: 493 / 642

Step 4:
493 divided by 642 is 0 with a remainder of 493.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 493 leaves us with 493.
Fetch the next digit (1) from the dividend, attach it to 493 and continue: 4931 / 642

On to step 5:
If we divide 4931 by 642, we get 7 and a remainder of 437.
Use 7 as the next digit of our solution. 
Result so far: 107.0
Subtract 4494 from 4931 to get 437.
Append the next digit (2) from the dividend to 437 and continue with: 4372 / 642

On to step 6:
If we divide 4372 by 642, we get 6 and a remainder of 520.
The number 6 becomes the next digit in our result. 
Result so far: 1076.0
Subtracting 3852 from 4372 leaves us with 520.
Bring next digit (5) of the dividend behind the 520 and repeat the process: 5205 / 642

Going ahead to step 7:
642 goes into 5205 8 times with a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 10768.0
Subtracting 5136 from 5205 leaves us with 69.
Take the next digit (7) from the dividend and append it to 69, then repeat: 697 / 642

On to step 8:
642 can be fit into 697 1 times, resulting in a remainder of 55.
Put 1 as the next digit of the answer. 
Result so far: 107681.0
Deduct 642 from 697 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 9:
642 goes into 550 0 times with a remainder of 550.
Put 0 as the next digit of the answer. 
Result so far: 107681.0
The remainder is 550 after subtracting 0 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 10:
5500 divided by 642 is 8 with a remainder of 364.
Record the quotient 8 as the next digit in the result. 
Result so far: 107681.08
Subtract 5136 from 5500 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 11:
The number 642 fits into 3640 5 times, leaving a remainder of 430.
The next digit of our result is 5. 
Result so far: 107681.085
If we subtract 3210 from 3640, we get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Let's proceed to step 12:
If we divide 4300 by 642, we get 6 and a remainder of 448.
The next digit of our result is 6. 
Result so far: 107681.0856
If we subtract 3852 from 4300, we get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

On to step 13:
642 can be fit into 4480 6 times, resulting in a remainder of 628.
The next digit of our result is 6. 
Result so far: 107681.08566
If we take 3852 away from 4480, we end up with 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

Our division results in 107681.08566 with a remaining 0.000628.