We look at the division of 67577143 by 421 
Our goal is to divide 67577143 by 421.

On to step 1:
The number 421 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 421

Advancing to step 2:
67 divided by 421 is 0 with a remainder of 67.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 67 after subtracting 0 from 67.
Append the next digit (5) from the dividend to 67 and continue with: 675 / 421

Moving on to step 3:
421 can be fit into 675 1 times, resulting in a remainder of 254.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 421 from 675, we get 254.
Include the next digit (7) from the dividend after 254, then repeat: 2547 / 421

Step 4:
When dividing 2547 by 421, we get 6 with a remainder of 21.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtracting 2526 from 2547 leaves us with 21.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 421

Advancing to step 5:
217 divided by 421 is 0 with a remainder of 217.
Put 0 as the next digit of the answer. 
Result so far: 160.0
Subtract 0 from 217 to get 217.
Bring next digit (1) of the dividend behind the 217 and repeat the process: 2171 / 421

Advancing to step 6:
When dividing 2171 by 421, we get 5 with a remainder of 66.
The next digit of our result is 5. 
Result so far: 1605.0
Subtracting 2105 from 2171 leaves us with 66.
Include the next digit (4) from the dividend after 66, then repeat: 664 / 421

Step 7:
421 can be fit into 664 1 times, resulting in a remainder of 243.
Write down 1 as next digit of the result. 
Result so far: 16051.0
Deduct 421 from 664 and we're left with 243.
Append the next digit (3) from the dividend to 243 and continue with: 2433 / 421

Going ahead to step 8:
The number 421 fits into 2433 5 times, leaving a remainder of 328.
The next digit of our result is 5. 
Result so far: 160515.0
Deduct 2105 from 2433 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Advancing to step 9:
3280 divided by 421 is 7 with a remainder of 333.
The next digit of our result is 7. 
Result so far: 160515.7
Subtract 2947 from 3280 to get 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Let's proceed to step 10:
When dividing 3330 by 421, we get 7 with a remainder of 383.
The number 7 becomes the next digit in our result. 
Result so far: 160515.77
Subtracting 2947 from 3330 leaves us with 383.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

The quotient of the division is 160515.77, and the remainder is 0.383.