21416251 ÷ 177 
We want to divide 21416251 by 177.

Step 1:
177 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 177

Advancing to step 2:
177 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (4) from the dividend after 21, then repeat: 214 / 177

Advancing to step 3:
The number 177 fits into 214 1 times, leaving a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 177 away from 214, we end up with 37.
Take the next digit (1) from the dividend and append it to 37, then repeat: 371 / 177

On to step 4:
371 divided by 177 is 2 with a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 354 from 371 leaves us with 17.
Include the next digit (6) from the dividend after 17, then repeat: 176 / 177

Step 5:
177 can be fit into 176 0 times, resulting in a remainder of 176.
Write down 0 as next digit of the result. 
Result so far: 120.0
If we take 0 away from 176, we end up with 176.
Fetch the next digit (2) from the dividend, attach it to 176 and continue: 1762 / 177

On to step 6:
If we divide 1762 by 177, we get 9 and a remainder of 169.
Put 9 as the next digit of the answer. 
Result so far: 1209.0
If we subtract 1593 from 1762, we get 169.
Bring next digit (5) of the dividend behind the 169 and repeat the process: 1695 / 177

Moving on to step 7:
177 goes into 1695 9 times with a remainder of 102.
The next digit of our result is 9. 
Result so far: 12099.0
Subtract 1593 from 1695 to get 102.
Take the next digit (1) from the dividend and append it to 102, then repeat: 1021 / 177

Advancing to step 8:
177 can be fit into 1021 5 times, resulting in a remainder of 136.
Put 5 as the next digit of the answer. 
Result so far: 120995.0
If we take 885 away from 1021, we end up with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Moving on to step 9:
177 can be fit into 1360 7 times, resulting in a remainder of 121.
Put 7 as the next digit of the answer. 
Result so far: 120995.7
Subtracting 1239 from 1360 leaves us with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Step 10:
177 goes into 1210 6 times with a remainder of 148.
The next digit of our result is 6. 
Result so far: 120995.76
If we take 1062 away from 1210, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Let's proceed to step 11:
The number 177 fits into 1480 8 times, leaving a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 120995.768
Subtracting 1416 from 1480 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 12:
640 divided by 177 is 3 with a remainder of 109.
Record the quotient 3 as the next digit in the result. 
Result so far: 120995.7683
If we subtract 531 from 640, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Going ahead to step 13:
When dividing 1090 by 177, we get 6 with a remainder of 28.
Use 6 as the next digit of our solution. 
Result so far: 120995.76836
If we take 1062 away from 1090, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 14:
177 goes into 280 1 times with a remainder of 103.
Record the quotient 1 as the next digit in the result. 
Result so far: 120995.768361
The remainder is 103 after subtracting 177 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Advancing to step 15:
When dividing 1030 by 177, we get 5 with a remainder of 145.
The number 5 becomes the next digit in our result. 
Result so far: 120995.7683615
If we subtract 885 from 1030, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 16:
177 goes into 1450 8 times with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 120995.76836158
The remainder is 34 after subtracting 1416 from 1450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final outcome is 120995.76836158, with a leftover of 3.4e-08.