51290873 ÷ 658 
The aim is to understand the frequency of 658 in 51290873.

Going ahead to step 1:
The number 658 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 658

Moving on to step 2:
51 divided by 658 is 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Append the next digit (2) from the dividend to 51 and continue with: 512 / 658

Going ahead to step 3:
658 can be fit into 512 0 times, resulting in a remainder of 512.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 512 after subtracting 0 from 512.
Append the next digit (9) from the dividend to 512 and continue with: 5129 / 658

Going ahead to step 4:
When dividing 5129 by 658, we get 7 with a remainder of 523.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 4606 from 5129 and we're left with 523.
Bring next digit (0) of the dividend behind the 523 and repeat the process: 5230 / 658

Step 5:
5230 divided by 658 is 7 with a remainder of 624.
Use 7 as the next digit of our solution. 
Result so far: 77.0
Subtract 4606 from 5230 to get 624.
Take the next digit (8) from the dividend and append it to 624, then repeat: 6248 / 658

Advancing to step 6:
658 can be fit into 6248 9 times, resulting in a remainder of 326.
The next digit of our result is 9. 
Result so far: 779.0
If we take 5922 away from 6248, we end up with 326.
Append the next digit (7) from the dividend to 326 and continue with: 3267 / 658

Advancing to step 7:
The number 658 fits into 3267 4 times, leaving a remainder of 635.
Use 4 as the next digit of our solution. 
Result so far: 7794.0
The remainder is 635 after subtracting 2632 from 3267.
Grab the next digit (3) from the dividend, add it to 635, then carry on: 6353 / 658

Advancing to step 8:
6353 divided by 658 is 9 with a remainder of 431.
Put 9 as the next digit of the answer. 
Result so far: 77949.0
Subtract 5922 from 6353 to get 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Advancing to step 9:
When dividing 4310 by 658, we get 6 with a remainder of 362.
Record the quotient 6 as the next digit in the result. 
Result so far: 77949.6
The remainder is 362 after subtracting 3948 from 4310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Advancing to step 10:
3620 divided by 658 is 5 with a remainder of 330.
Use 5 as the next digit of our solution. 
Result so far: 77949.65
If we take 3290 away from 3620, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Going ahead to step 11:
3300 divided by 658 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 77949.655
Subtract 3290 from 3300 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 77949.655 with a balance of 0.001.