428638 ÷ 286 
Our goal is to divide 428638 by 286.

Step 1:
The number 286 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 286

Moving on to step 2:
286 goes into 42 0 times with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 286

Let's proceed to step 3:
The number 286 fits into 428 1 times, leaving a remainder of 142.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 286 from 428 and we're left with 142.
Grab the next digit (6) from the dividend, add it to 142, then carry on: 1426 / 286

Moving on to step 4:
286 can be fit into 1426 4 times, resulting in a remainder of 282.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 1144 from 1426, we get 282.
Grab the next digit (3) from the dividend, add it to 282, then carry on: 2823 / 286

Let's proceed to step 5:
The number 286 fits into 2823 9 times, leaving a remainder of 249.
The number 9 becomes the next digit in our result. 
Result so far: 149.0
Subtracting 2574 from 2823 leaves us with 249.
Append the next digit (8) from the dividend to 249 and continue with: 2498 / 286

Step 6:
The number 286 fits into 2498 8 times, leaving a remainder of 210.
Record the quotient 8 as the next digit in the result. 
Result so far: 1498.0
Subtracting 2288 from 2498 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 7:
When dividing 2100 by 286, we get 7 with a remainder of 98.
The number 7 becomes the next digit in our result. 
Result so far: 1498.7
If we subtract 2002 from 2100, we get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Advancing to step 8:
980 divided by 286 is 3 with a remainder of 122.
Put 3 as the next digit of the answer. 
Result so far: 1498.73
Deduct 858 from 980 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Let's proceed to step 9:
286 goes into 1220 4 times with a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 1498.734
If we take 1144 away from 1220, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 10:
If we divide 760 by 286, we get 2 and a remainder of 188.
Write down 2 as next digit of the result. 
Result so far: 1498.7342
Subtracting 572 from 760 leaves us with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Going ahead to step 11:
286 can be fit into 1880 6 times, resulting in a remainder of 164.
Write down 6 as next digit of the result. 
Result so far: 1498.73426
The remainder is 164 after subtracting 1716 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Moving on to step 12:
286 goes into 1640 5 times with a remainder of 210.
The number 5 becomes the next digit in our result. 
Result so far: 1498.734265
Subtract 1430 from 1640 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 13:
The number 286 fits into 2100 7 times, leaving a remainder of 98.
The number 7 becomes the next digit in our result. 
Result so far: 1498.7342657
Subtract 2002 from 2100 to get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 14:
286 goes into 980 3 times with a remainder of 122.
Use 3 as the next digit of our solution. 
Result so far: 1498.73426573
Subtract 858 from 980 to get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

The quotient of the division is 1498.73426573, and the remainder is 1.22e-07.