We look at the division of 54621345 by 857 
We're looking to find how many times 857 goes into 54621345.

On to step 1:
857 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 857

Moving on to step 2:
54 divided by 857 is 0 with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Append the next digit (6) from the dividend to 54 and continue with: 546 / 857

Moving on to step 3:
857 can be fit into 546 0 times, resulting in a remainder of 546.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 546 and we're left with 546.
Fetch the next digit (2) from the dividend, attach it to 546 and continue: 5462 / 857

On to step 4:
857 goes into 5462 6 times with a remainder of 320.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 320 after subtracting 5142 from 5462.
Take the next digit (1) from the dividend and append it to 320, then repeat: 3201 / 857

Let's proceed to step 5:
If we divide 3201 by 857, we get 3 and a remainder of 630.
Use 3 as the next digit of our solution. 
Result so far: 63.0
Deduct 2571 from 3201 and we're left with 630.
Include the next digit (3) from the dividend after 630, then repeat: 6303 / 857

Moving on to step 6:
The number 857 fits into 6303 7 times, leaving a remainder of 304.
Write down 7 as next digit of the result. 
Result so far: 637.0
Subtract 5999 from 6303 to get 304.
Include the next digit (4) from the dividend after 304, then repeat: 3044 / 857

Advancing to step 7:
857 can be fit into 3044 3 times, resulting in a remainder of 473.
Write down 3 as next digit of the result. 
Result so far: 6373.0
If we take 2571 away from 3044, we end up with 473.
Bring next digit (5) of the dividend behind the 473 and repeat the process: 4735 / 857

Moving on to step 8:
857 can be fit into 4735 5 times, resulting in a remainder of 450.
The next digit of our result is 5. 
Result so far: 63735.0
Subtract 4285 from 4735 to get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Let's proceed to step 9:
4500 divided by 857 is 5 with a remainder of 215.
Write down 5 as next digit of the result. 
Result so far: 63735.5
Subtracting 4285 from 4500 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

On to step 10:
When dividing 2150 by 857, we get 2 with a remainder of 436.
Write down 2 as next digit of the result. 
Result so far: 63735.52
Deduct 1714 from 2150 and we're left with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Moving on to step 11:
857 goes into 4360 5 times with a remainder of 75.
The next digit of our result is 5. 
Result so far: 63735.525
Deduct 4285 from 4360 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 12:
857 can be fit into 750 0 times, resulting in a remainder of 750.
The number 0 becomes the next digit in our result. 
Result so far: 63735.525
Subtract 0 from 750 to get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Going ahead to step 13:
857 can be fit into 7500 8 times, resulting in a remainder of 644.
The number 8 becomes the next digit in our result. 
Result so far: 63735.52508
If we subtract 6856 from 7500, we get 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Step 14:
The number 857 fits into 6440 7 times, leaving a remainder of 441.
The number 7 becomes the next digit in our result. 
Result so far: 63735.525087
Subtract 5999 from 6440 to get 441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

Step 15:
If we divide 4410 by 857, we get 5 and a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 63735.5250875
Subtracting 4285 from 4410 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 16:
857 goes into 1250 1 times with a remainder of 393.
Put 1 as the next digit of the answer. 
Result so far: 63735.52508751
Subtract 857 from 1250 to get 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

The quotient of the division is 63735.52508751, and the remainder is 3.93e-07.