40020545 divided by 420 
Let's see how many times 420 fits into 40020545.

Advancing to step 1:
420 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 420

Advancing to step 2:
The number 420 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Fetch the next digit (0) from the dividend, attach it to 40 and continue: 400 / 420

Going ahead to step 3:
When dividing 400 by 420, we get 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 400 leaves us with 400.
Grab the next digit (2) from the dividend, add it to 400, then carry on: 4002 / 420

Step 4:
If we divide 4002 by 420, we get 9 and a remainder of 222.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 3780 from 4002, we get 222.
Fetch the next digit (0) from the dividend, attach it to 222 and continue: 2220 / 420

Advancing to step 5:
If we divide 2220 by 420, we get 5 and a remainder of 120.
The number 5 becomes the next digit in our result. 
Result so far: 95.0
Subtracting 2100 from 2220 leaves us with 120.
Take the next digit (5) from the dividend and append it to 120, then repeat: 1205 / 420

Advancing to step 6:
When dividing 1205 by 420, we get 2 with a remainder of 365.
Write down 2 as next digit of the result. 
Result so far: 952.0
The remainder is 365 after subtracting 840 from 1205.
Include the next digit (4) from the dividend after 365, then repeat: 3654 / 420

Step 7:
3654 divided by 420 is 8 with a remainder of 294.
The number 8 becomes the next digit in our result. 
Result so far: 9528.0
Deduct 3360 from 3654 and we're left with 294.
Bring next digit (5) of the dividend behind the 294 and repeat the process: 2945 / 420

Moving on to step 8:
When dividing 2945 by 420, we get 7 with a remainder of 5.
The next digit of our result is 7. 
Result so far: 95287.0
Subtract 2940 from 2945 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
420 can be fit into 50 0 times, resulting in a remainder of 50.
The next digit of our result is 0. 
Result so far: 95287.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 10:
When dividing 500 by 420, we get 1 with a remainder of 80.
The next digit of our result is 1. 
Result so far: 95287.01
If we take 420 away from 500, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
The number 420 fits into 800 1 times, leaving a remainder of 380.
The number 1 becomes the next digit in our result. 
Result so far: 95287.011
The remainder is 380 after subtracting 420 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The quotient of the division is 95287.011, and the remainder is 0.038.