We look at the division of 6537157 by 879 
The aim is to understand the frequency of 879 in 6537157.

Going ahead to step 1:
6 divided by 879 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 879

Moving on to step 2:
879 can be fit into 65 0 times, resulting in a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 65, we get 65.
Bring next digit (3) of the dividend behind the 65 and repeat the process: 653 / 879

Let's proceed to step 3:
653 divided by 879 is 0 with a remainder of 653.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 653 to get 653.
Append the next digit (7) from the dividend to 653 and continue with: 6537 / 879

Advancing to step 4:
When dividing 6537 by 879, we get 7 with a remainder of 384.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 6153 from 6537, we get 384.
Include the next digit (1) from the dividend after 384, then repeat: 3841 / 879

Step 5:
879 can be fit into 3841 4 times, resulting in a remainder of 325.
Use 4 as the next digit of our solution. 
Result so far: 74.0
Subtracting 3516 from 3841 leaves us with 325.
Grab the next digit (5) from the dividend, add it to 325, then carry on: 3255 / 879

On to step 6:
If we divide 3255 by 879, we get 3 and a remainder of 618.
Use 3 as the next digit of our solution. 
Result so far: 743.0
Deduct 2637 from 3255 and we're left with 618.
Append the next digit (7) from the dividend to 618 and continue with: 6187 / 879

Advancing to step 7:
If we divide 6187 by 879, we get 7 and a remainder of 34.
Use 7 as the next digit of our solution. 
Result so far: 7437.0
Subtracting 6153 from 6187 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 8:
If we divide 340 by 879, we get 0 and a remainder of 340.
Use 0 as the next digit of our solution. 
Result so far: 7437.0
Subtract 0 from 340 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 9:
879 can be fit into 3400 3 times, resulting in a remainder of 763.
Use 3 as the next digit of our solution. 
Result so far: 7437.03
If we take 2637 away from 3400, we end up with 763.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7630, and continue the process.

Let's proceed to step 10:
879 can be fit into 7630 8 times, resulting in a remainder of 598.
Record the quotient 8 as the next digit in the result. 
Result so far: 7437.038
The remainder is 598 after subtracting 7032 from 7630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5980, and continue the process.

Let's proceed to step 11:
879 goes into 5980 6 times with a remainder of 706.
The next digit of our result is 6. 
Result so far: 7437.0386
Subtracting 5274 from 5980 leaves us with 706.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7060, and continue the process.

On to step 12:
If we divide 7060 by 879, we get 8 and a remainder of 28.
The next digit of our result is 8. 
Result so far: 7437.03868
If we subtract 7032 from 7060, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 13:
When dividing 280 by 879, we get 0 with a remainder of 280.
The next digit of our result is 0. 
Result so far: 7437.03868
The remainder is 280 after subtracting 0 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Moving on to step 14:
879 goes into 2800 3 times with a remainder of 163.
The next digit of our result is 3. 
Result so far: 7437.0386803
Subtracting 2637 from 2800 leaves us with 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

On to step 15:
The number 879 fits into 1630 1 times, leaving a remainder of 751.
Record the quotient 1 as the next digit in the result. 
Result so far: 7437.03868031
Deduct 879 from 1630 and we're left with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

The final result is 7437.03868031 with a remainder of 7.51e-07.