61891931 divided by 602 
The aim is to understand the frequency of 602 in 61891931.

Let's proceed to step 1:
When dividing 6 by 602, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 602

Let's proceed to step 2:
When dividing 61 by 602, we get 0 with a remainder of 61.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Bring next digit (8) of the dividend behind the 61 and repeat the process: 618 / 602

Let's proceed to step 3:
602 can be fit into 618 1 times, resulting in a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 602 from 618 and we're left with 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 602

Advancing to step 4:
When dividing 169 by 602, we get 0 with a remainder of 169.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 169 to get 169.
Append the next digit (1) from the dividend to 169 and continue with: 1691 / 602

Let's proceed to step 5:
602 can be fit into 1691 2 times, resulting in a remainder of 487.
Write down 2 as next digit of the result. 
Result so far: 102.0
The remainder is 487 after subtracting 1204 from 1691.
Fetch the next digit (9) from the dividend, attach it to 487 and continue: 4879 / 602

Going ahead to step 6:
4879 divided by 602 is 8 with a remainder of 63.
Use 8 as the next digit of our solution. 
Result so far: 1028.0
The remainder is 63 after subtracting 4816 from 4879.
Grab the next digit (3) from the dividend, add it to 63, then carry on: 633 / 602

Going ahead to step 7:
602 goes into 633 1 times with a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 10281.0
The remainder is 31 after subtracting 602 from 633.
Fetch the next digit (1) from the dividend, attach it to 31 and continue: 311 / 602

Going ahead to step 8:
602 can be fit into 311 0 times, resulting in a remainder of 311.
Record the quotient 0 as the next digit in the result. 
Result so far: 102810.0
If we take 0 away from 311, we end up with 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

On to step 9:
602 goes into 3110 5 times with a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 102810.5
If we take 3010 away from 3110, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 10:
If we divide 1000 by 602, we get 1 and a remainder of 398.
Write down 1 as next digit of the result. 
Result so far: 102810.51
Deduct 602 from 1000 and we're left with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Going ahead to step 11:
3980 divided by 602 is 6 with a remainder of 368.
Record the quotient 6 as the next digit in the result. 
Result so far: 102810.516
Deduct 3612 from 3980 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 12:
The number 602 fits into 3680 6 times, leaving a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 102810.5166
If we take 3612 away from 3680, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final outcome is 102810.5166, with a leftover of 0.00068.