42431454 ÷ 857 
We're looking to find how many times 857 goes into 42431454.

Step 1:
If we divide 4 by 857, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 857

Advancing to step 2:
When dividing 42 by 857, we get 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Take the next digit (4) from the dividend and append it to 42, then repeat: 424 / 857

Moving on to step 3:
857 can be fit into 424 0 times, resulting in a remainder of 424.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 424 and we're left with 424.
Grab the next digit (3) from the dividend, add it to 424, then carry on: 4243 / 857

On to step 4:
The number 857 fits into 4243 4 times, leaving a remainder of 815.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 3428 from 4243 leaves us with 815.
Fetch the next digit (1) from the dividend, attach it to 815 and continue: 8151 / 857

Going ahead to step 5:
857 can be fit into 8151 9 times, resulting in a remainder of 438.
Write down 9 as next digit of the result. 
Result so far: 49.0
The remainder is 438 after subtracting 7713 from 8151.
Append the next digit (4) from the dividend to 438 and continue with: 4384 / 857

Advancing to step 6:
When dividing 4384 by 857, we get 5 with a remainder of 99.
The number 5 becomes the next digit in our result. 
Result so far: 495.0
Subtract 4285 from 4384 to get 99.
Take the next digit (5) from the dividend and append it to 99, then repeat: 995 / 857

Step 7:
The number 857 fits into 995 1 times, leaving a remainder of 138.
Use 1 as the next digit of our solution. 
Result so far: 4951.0
If we take 857 away from 995, we end up with 138.
Grab the next digit (4) from the dividend, add it to 138, then carry on: 1384 / 857

Advancing to step 8:
1384 divided by 857 is 1 with a remainder of 527.
Record the quotient 1 as the next digit in the result. 
Result so far: 49511.0
Subtracting 857 from 1384 leaves us with 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Let's proceed to step 9:
857 can be fit into 5270 6 times, resulting in a remainder of 128.
The number 6 becomes the next digit in our result. 
Result so far: 49511.6
Deduct 5142 from 5270 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 10:
If we divide 1280 by 857, we get 1 and a remainder of 423.
Use 1 as the next digit of our solution. 
Result so far: 49511.61
If we subtract 857 from 1280, we get 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Let's proceed to step 11:
When dividing 4230 by 857, we get 4 with a remainder of 802.
The number 4 becomes the next digit in our result. 
Result so far: 49511.614
Subtract 3428 from 4230 to get 802.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8020, and continue the process.

Step 12:
857 goes into 8020 9 times with a remainder of 307.
The next digit of our result is 9. 
Result so far: 49511.6149
The remainder is 307 after subtracting 7713 from 8020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Going ahead to step 13:
The number 857 fits into 3070 3 times, leaving a remainder of 499.
The number 3 becomes the next digit in our result. 
Result so far: 49511.61493
The remainder is 499 after subtracting 2571 from 3070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Moving on to step 14:
857 can be fit into 4990 5 times, resulting in a remainder of 705.
The next digit of our result is 5. 
Result so far: 49511.614935
If we subtract 4285 from 4990, we get 705.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7050, and continue the process.

Going ahead to step 15:
7050 divided by 857 is 8 with a remainder of 194.
Put 8 as the next digit of the answer. 
Result so far: 49511.6149358
The remainder is 194 after subtracting 6856 from 7050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Going ahead to step 16:
1940 divided by 857 is 2 with a remainder of 226.
The number 2 becomes the next digit in our result. 
Result so far: 49511.61493582
Subtracting 1714 from 1940 leaves us with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

The quotient of the division is 49511.61493582, and the remainder is 2.26e-07.