We look at the division of 38543455 by 420 
We're looking to find how many times 420 goes into 38543455.

On to step 1:
3 divided by 420 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 420

Moving on to step 2:
420 goes into 38 0 times with a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 420

On to step 3:
385 divided by 420 is 0 with a remainder of 385.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 385, we end up with 385.
Bring next digit (4) of the dividend behind the 385 and repeat the process: 3854 / 420

On to step 4:
420 goes into 3854 9 times with a remainder of 74.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 3780 from 3854 and we're left with 74.
Append the next digit (3) from the dividend to 74 and continue with: 743 / 420

Let's proceed to step 5:
If we divide 743 by 420, we get 1 and a remainder of 323.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we subtract 420 from 743, we get 323.
Take the next digit (4) from the dividend and append it to 323, then repeat: 3234 / 420

Let's proceed to step 6:
420 can be fit into 3234 7 times, resulting in a remainder of 294.
The number 7 becomes the next digit in our result. 
Result so far: 917.0
Deduct 2940 from 3234 and we're left with 294.
Grab the next digit (5) from the dividend, add it to 294, then carry on: 2945 / 420

Advancing to step 7:
420 goes into 2945 7 times with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 9177.0
If we subtract 2940 from 2945, we get 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 420

Advancing to step 8:
The number 420 fits into 55 0 times, leaving a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 91770.0
Subtract 0 from 55 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 9:
420 goes into 550 1 times with a remainder of 130.
Record the quotient 1 as the next digit in the result. 
Result so far: 91770.1
Deduct 420 from 550 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 10:
The number 420 fits into 1300 3 times, leaving a remainder of 40.
The number 3 becomes the next digit in our result. 
Result so far: 91770.13
Subtract 1260 from 1300 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
400 divided by 420 is 0 with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 91770.13
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 12:
If we divide 4000 by 420, we get 9 and a remainder of 220.
Use 9 as the next digit of our solution. 
Result so far: 91770.1309
The remainder is 220 after subtracting 3780 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Going ahead to step 13:
420 can be fit into 2200 5 times, resulting in a remainder of 100.
The number 5 becomes the next digit in our result. 
Result so far: 91770.13095
Subtracting 2100 from 2200 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.

Moving on to step 14:
420 can be fit into 1000 2 times, resulting in a remainder of 160.
Record the quotient 2 as the next digit in the result. 
Result so far: 91770.130952
Subtract 840 from 1000 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 15:
The number 420 fits into 1600 3 times, leaving a remainder of 340.
The next digit of our result is 3. 
Result so far: 91770.1309523
Subtract 1260 from 1600 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 16:
The number 420 fits into 3400 8 times, leaving a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 91770.13095238
If we subtract 3360 from 3400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 91770.13095238 with a remaining 4e-08.