16977381 divided by 421 
Our goal is to divide 16977381 by 421.

On to step 1:
When dividing 1 by 421, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 421

Step 2:
16 divided by 421 is 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Grab the next digit (9) from the dividend, add it to 16, then carry on: 169 / 421

Moving on to step 3:
169 divided by 421 is 0 with a remainder of 169.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 169 to get 169.
Bring next digit (7) of the dividend behind the 169 and repeat the process: 1697 / 421

Let's proceed to step 4:
421 can be fit into 1697 4 times, resulting in a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 1684 from 1697 leaves us with 13.
Append the next digit (7) from the dividend to 13 and continue with: 137 / 421

Moving on to step 5:
The number 421 fits into 137 0 times, leaving a remainder of 137.
Write down 0 as next digit of the result. 
Result so far: 40.0
Subtract 0 from 137 to get 137.
Grab the next digit (3) from the dividend, add it to 137, then carry on: 1373 / 421

Step 6:
The number 421 fits into 1373 3 times, leaving a remainder of 110.
Use 3 as the next digit of our solution. 
Result so far: 403.0
Deduct 1263 from 1373 and we're left with 110.
Append the next digit (8) from the dividend to 110 and continue with: 1108 / 421

On to step 7:
421 can be fit into 1108 2 times, resulting in a remainder of 266.
The number 2 becomes the next digit in our result. 
Result so far: 4032.0
Deduct 842 from 1108 and we're left with 266.
Take the next digit (1) from the dividend and append it to 266, then repeat: 2661 / 421

Moving on to step 8:
The number 421 fits into 2661 6 times, leaving a remainder of 135.
Record the quotient 6 as the next digit in the result. 
Result so far: 40326.0
If we subtract 2526 from 2661, we get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Let's proceed to step 9:
421 can be fit into 1350 3 times, resulting in a remainder of 87.
The next digit of our result is 3. 
Result so far: 40326.3
Deduct 1263 from 1350 and we're left with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Moving on to step 10:
421 goes into 870 2 times with a remainder of 28.
The next digit of our result is 2. 
Result so far: 40326.32
Subtracting 842 from 870 leaves us 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 11:
280 divided by 421 is 0 with a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 40326.32
Subtract 0 from 280 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 12:
421 can be fit into 2800 6 times, resulting in a remainder of 274.
Use 6 as the next digit of our solution. 
Result so far: 40326.3206
Subtract 2526 from 2800 to get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Step 13:
421 goes into 2740 6 times with a remainder of 214.
The next digit of our result is 6. 
Result so far: 40326.32066
Subtract 2526 from 2740 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

The quotient of the division is 40326.32066, and the remainder is 0.000214.