We're dividing 857450 by 451 
We want to figure out the number of times 857450 can be divided by 451.

Step 1:
The number 451 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 451

Moving on to step 2:
451 goes into 85 0 times with a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Grab the next digit (7) from the dividend, add it to 85, then carry on: 857 / 451

Step 3:
The number 451 fits into 857 1 times, leaving a remainder of 406.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 406 after subtracting 451 from 857.
Bring next digit (4) of the dividend behind the 406 and repeat the process: 4064 / 451

Step 4:
451 goes into 4064 9 times with a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 19.0
The remainder is 5 after subtracting 4059 from 4064.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 451

Let's proceed to step 5:
If we divide 55 by 451, we get 0 and a remainder of 55.
The next digit of our result is 0. 
Result so far: 190.0
Deduct 0 from 55 and we're left with 55.
Grab the next digit (0) from the dividend, add it to 55, then carry on: 550 / 451

On to step 6:
451 goes into 550 1 times with a remainder of 99.
Put 1 as the next digit of the answer. 
Result so far: 1901.0
Subtract 451 from 550 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 7:
990 divided by 451 is 2 with a remainder of 88.
Put 2 as the next digit of the answer. 
Result so far: 1901.2
Deduct 902 from 990 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 8:
If we divide 880 by 451, we get 1 and a remainder of 429.
Use 1 as the next digit of our solution. 
Result so far: 1901.21
If we subtract 451 from 880, we get 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Advancing to step 9:
If we divide 4290 by 451, we get 9 and a remainder of 231.
The number 9 becomes the next digit in our result. 
Result so far: 1901.219
If we subtract 4059 from 4290, we get 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Going ahead to step 10:
451 can be fit into 2310 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 1901.2195
If we subtract 2255 from 2310, we 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.

Step 11:
451 goes into 550 1 times with a remainder of 99.
Use 1 as the next digit of our solution. 
Result so far: 1901.21951
Deduct 451 from 550 and we're left with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Step 12:
451 can be fit into 990 2 times, resulting in a remainder of 88.
Write down 2 as next digit of the result. 
Result so far: 1901.219512
The remainder is 88 after subtracting 902 from 990.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 13:
451 goes into 880 1 times with a remainder of 429.
The next digit of our result is 1. 
Result so far: 1901.2195121
If we take 451 away from 880, we end up with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Going ahead to step 14:
The number 451 fits into 4290 9 times, leaving a remainder of 231.
The number 9 becomes the next digit in our result. 
Result so far: 1901.21951219
Subtracting 4059 from 4290 leaves us with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

The final result is 1901.21951219 with a remainder of 2.31e-07.