21197587 ÷ 346 
The aim is to understand the frequency of 346 in 21197587.

On to step 1:
2 divided by 346 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 346

On to step 2:
346 can be fit into 21 0 times, resulting in 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.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 346

Let's proceed to step 3:
346 can be fit into 211 0 times, resulting in a remainder of 211.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 211 and we're left with 211.
Fetch the next digit (9) from the dividend, attach it to 211 and continue: 2119 / 346

Step 4:
The number 346 fits into 2119 6 times, leaving a remainder of 43.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 2076 from 2119, we get 43.
Append the next digit (7) from the dividend to 43 and continue with: 437 / 346

Let's proceed to step 5:
When dividing 437 by 346, we get 1 with a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 61.0
The remainder is 91 after subtracting 346 from 437.
Grab the next digit (5) from the dividend, add it to 91, then carry on: 915 / 346

Step 6:
346 can be fit into 915 2 times, resulting in a remainder of 223.
The next digit of our result is 2. 
Result so far: 612.0
If we subtract 692 from 915, we get 223.
Fetch the next digit (8) from the dividend, attach it to 223 and continue: 2238 / 346

On to step 7:
346 goes into 2238 6 times with a remainder of 162.
The number 6 becomes the next digit in our result. 
Result so far: 6126.0
If we take 2076 away from 2238, we end up with 162.
Append the next digit (7) from the dividend to 162 and continue with: 1627 / 346

Going ahead to step 8:
The number 346 fits into 1627 4 times, leaving a remainder of 243.
The next digit of our result is 4. 
Result so far: 61264.0
If we subtract 1384 from 1627, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

On to step 9:
The number 346 fits into 2430 7 times, leaving a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 61264.7
Deduct 2422 from 2430 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 346 is 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 61264.7
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
800 divided by 346 is 2 with a remainder of 108.
Record the quotient 2 as the next digit in the result. 
Result so far: 61264.702
If we subtract 692 from 800, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 12:
346 goes into 1080 3 times with a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 61264.7023
If we subtract 1038 from 1080, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 13:
420 divided by 346 is 1 with a remainder of 74.
Record the quotient 1 as the next digit in the result. 
Result so far: 61264.70231
If we subtract 346 from 420, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 14:
When dividing 740 by 346, we get 2 with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 61264.702312
The remainder is 48 after subtracting 692 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 15:
480 divided by 346 is 1 with a remainder of 134.
The number 1 becomes the next digit in our result. 
Result so far: 61264.7023121
Subtract 346 from 480 to get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Step 16:
When dividing 1340 by 346, we get 3 with a remainder of 302.
The number 3 becomes the next digit in our result. 
Result so far: 61264.70231213
The remainder is 302 after subtracting 1038 from 1340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

The final outcome is 61264.70231213, with a leftover of 3.02e-07.