53648807 divided by 428 
Let's see how many times 428 fits into 53648807.

On to step 1:
5 divided by 428 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 428

Step 2:
The number 428 fits into 53 0 times, leaving a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Fetch the next digit (6) from the dividend, attach it to 53 and continue: 536 / 428

Advancing to step 3:
The number 428 fits into 536 1 times, leaving a remainder of 108.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 428 from 536 and we're left with 108.
Bring next digit (4) of the dividend behind the 108 and repeat the process: 1084 / 428

Moving on to step 4:
428 can be fit into 1084 2 times, resulting in a remainder of 228.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 856 from 1084 and we're left with 228.
Grab the next digit (8) from the dividend, add it to 228, then carry on: 2288 / 428

Going ahead to step 5:
The number 428 fits into 2288 5 times, leaving a remainder of 148.
Put 5 as the next digit of the answer. 
Result so far: 125.0
The remainder is 148 after subtracting 2140 from 2288.
Fetch the next digit (8) from the dividend, attach it to 148 and continue: 1488 / 428

Let's proceed to step 6:
If we divide 1488 by 428, we get 3 and a remainder of 204.
Use 3 as the next digit of our solution. 
Result so far: 1253.0
If we take 1284 away from 1488, we end up with 204.
Take the next digit (0) from the dividend and append it to 204, then repeat: 2040 / 428

On to step 7:
The number 428 fits into 2040 4 times, leaving a remainder of 328.
Use 4 as the next digit of our solution. 
Result so far: 12534.0
Deduct 1712 from 2040 and we're left with 328.
Include the next digit (7) from the dividend after 328, then repeat: 3287 / 428

Going ahead to step 8:
If we divide 3287 by 428, we get 7 and a remainder of 291.
The next digit of our result is 7. 
Result so far: 125347.0
The remainder is 291 after subtracting 2996 from 3287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Moving on to step 9:
The number 428 fits into 2910 6 times, leaving a remainder of 342.
Record the quotient 6 as the next digit in the result. 
Result so far: 125347.6
Subtract 2568 from 2910 to get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Step 10:
3420 divided by 428 is 7 with a remainder of 424.
The next digit of our result is 7. 
Result so far: 125347.67
If we subtract 2996 from 3420, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Step 11:
The number 428 fits into 4240 9 times, leaving a remainder of 388.
Put 9 as the next digit of the answer. 
Result so far: 125347.679
Subtract 3852 from 4240 to get 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Advancing to step 12:
428 goes into 3880 9 times with a remainder of 28.
Record the quotient 9 as the next digit in the result. 
Result so far: 125347.6799
Subtract 3852 from 3880 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 125347.6799 with a remainder of 0.00028.