21160958 ÷ 658 
The aim is to understand the frequency of 658 in 21160958.

Let's proceed to step 1:
If we divide 2 by 658, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 658

On to step 2:
When dividing 21 by 658, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (1) from the dividend, add it to 21, then carry on: 211 / 658

Step 3:
When dividing 211 by 658, we get 0 with a remainder of 211.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 211 leaves us with 211.
Take the next digit (6) from the dividend and append it to 211, then repeat: 2116 / 658

Let's proceed to step 4:
658 can be fit into 2116 3 times, resulting in a remainder of 142.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 1974 from 2116, we get 142.
Bring next digit (0) of the dividend behind the 142 and repeat the process: 1420 / 658

Let's proceed to step 5:
658 can be fit into 1420 2 times, resulting in a remainder of 104.
The next digit of our result is 2. 
Result so far: 32.0
If we take 1316 away from 1420, we end up with 104.
Include the next digit (9) from the dividend after 104, then repeat: 1049 / 658

Let's proceed to step 6:
658 goes into 1049 1 times with a remainder of 391.
Put 1 as the next digit of the answer. 
Result so far: 321.0
Subtracting 658 from 1049 leaves us with 391.
Append the next digit (5) from the dividend to 391 and continue with: 3915 / 658

Advancing to step 7:
658 can be fit into 3915 5 times, resulting in a remainder of 625.
Put 5 as the next digit of the answer. 
Result so far: 3215.0
Subtracting 3290 from 3915 leaves us with 625.
Fetch the next digit (8) from the dividend, attach it to 625 and continue: 6258 / 658

Let's proceed to step 8:
The number 658 fits into 6258 9 times, leaving a remainder of 336.
Write down 9 as next digit of the result. 
Result so far: 32159.0
Subtract 5922 from 6258 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Advancing to step 9:
3360 divided by 658 is 5 with a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 32159.5
The remainder is 70 after subtracting 3290 from 3360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 10:
The number 658 fits into 700 1 times, leaving a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 32159.51
Deduct 658 from 700 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 11:
658 goes into 420 0 times with a remainder of 420.
Use 0 as the next digit of our solution. 
Result so far: 32159.51
If we take 0 away from 420, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

On to step 12:
When dividing 4200 by 658, we get 6 with a remainder of 252.
Write down 6 as next digit of the result. 
Result so far: 32159.5106
Subtracting 3948 from 4200 leaves us with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Going ahead to step 13:
2520 divided by 658 is 3 with a remainder of 546.
Use 3 as the next digit of our solution. 
Result so far: 32159.51063
Subtract 1974 from 2520 to get 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Going ahead to step 14:
The number 658 fits into 5460 8 times, leaving a remainder of 196.
Put 8 as the next digit of the answer. 
Result so far: 32159.510638
The remainder is 196 after subtracting 5264 from 5460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Advancing to step 15:
The number 658 fits into 1960 2 times, leaving a remainder of 644.
Use 2 as the next digit of our solution. 
Result so far: 32159.5106382
Deduct 1316 from 1960 and we're left with 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Let's proceed to step 16:
If we divide 6440 by 658, we get 9 and a remainder of 518.
Write down 9 as next digit of the result. 
Result so far: 32159.51063829
The remainder is 518 after subtracting 5922 from 6440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

The final outcome is 32159.51063829, with a leftover of 5.18e-07.