21604891 ÷ 169 
We want to divide 21604891 by 169.

Moving on to step 1:
The number 169 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 169

Advancing to step 2:
21 divided by 169 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 169

Let's proceed to step 3:
When dividing 216 by 169, we get 1 with a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 47 after subtracting 169 from 216.
Take the next digit (0) from the dividend and append it to 47, then repeat: 470 / 169

On to step 4:
If we divide 470 by 169, we get 2 and a remainder of 132.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 338 away from 470, we end up with 132.
Take the next digit (4) from the dividend and append it to 132, then repeat: 1324 / 169

Step 5:
If we divide 1324 by 169, we get 7 and a remainder of 141.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
If we subtract 1183 from 1324, we get 141.
Grab the next digit (8) from the dividend, add it to 141, then carry on: 1418 / 169

On to step 6:
If we divide 1418 by 169, we get 8 and a remainder of 66.
Use 8 as the next digit of our solution. 
Result so far: 1278.0
If we subtract 1352 from 1418, we get 66.
Bring next digit (9) of the dividend behind the 66 and repeat the process: 669 / 169

Advancing to step 7:
669 divided by 169 is 3 with a remainder of 162.
Use 3 as the next digit of our solution. 
Result so far: 12783.0
If we take 507 away from 669, we end up with 162.
Grab the next digit (1) from the dividend, add it to 162, then carry on: 1621 / 169

Moving on to step 8:
The number 169 fits into 1621 9 times, leaving a remainder of 100.
Put 9 as the next digit of the answer. 
Result so far: 127839.0
Subtracting 1521 from 1621 leaves us 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.

Going ahead to step 9:
When dividing 1000 by 169, we get 5 with a remainder of 155.
Record the quotient 5 as the next digit in the result. 
Result so far: 127839.5
The remainder is 155 after subtracting 845 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Moving on to step 10:
When dividing 1550 by 169, we get 9 with a remainder of 29.
The next digit of our result is 9. 
Result so far: 127839.59
If we subtract 1521 from 1550, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 11:
290 divided by 169 is 1 with a remainder of 121.
Put 1 as the next digit of the answer. 
Result so far: 127839.591
If we subtract 169 from 290, we get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Going ahead to step 12:
169 goes into 1210 7 times with a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 127839.5917
If we subtract 1183 from 1210, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 13:
270 divided by 169 is 1 with a remainder of 101.
Put 1 as the next digit of the answer. 
Result so far: 127839.59171
Deduct 169 from 270 and we're left with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 14:
169 goes into 1010 5 times with a remainder of 165.
The next digit of our result is 5. 
Result so far: 127839.591715
If we take 845 away from 1010, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 15:
169 can be fit into 1650 9 times, resulting in a remainder of 129.
Use 9 as the next digit of our solution. 
Result so far: 127839.5917159
If we take 1521 away from 1650, we end up with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Let's proceed to step 16:
When dividing 1290 by 169, we get 7 with a remainder of 107.
Put 7 as the next digit of the answer. 
Result so far: 127839.59171597
Deduct 1183 from 1290 and we're left with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

The final outcome is 127839.59171597, with a leftover of 1.07e-07.