We look at the division of 64646513 by 428 
We want to divide 64646513 by 428.

Going ahead to step 1:
The number 428 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 428

Advancing to step 2:
64 divided by 428 is 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Take the next digit (6) from the dividend and append it to 64, then repeat: 646 / 428

Step 3:
428 can be fit into 646 1 times, resulting in a remainder of 218.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 428 from 646 leaves us with 218.
Grab the next digit (4) from the dividend, add it to 218, then carry on: 2184 / 428

Advancing to step 4:
428 goes into 2184 5 times with a remainder of 44.
The next digit of our result is 5. 
Result so far: 15.0
If we take 2140 away from 2184, we end up with 44.
Fetch the next digit (6) from the dividend, attach it to 44 and continue: 446 / 428

Advancing to step 5:
428 can be fit into 446 1 times, resulting in a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 151.0
If we take 428 away from 446, we end up with 18.
Fetch the next digit (5) from the dividend, attach it to 18 and continue: 185 / 428

Advancing to step 6:
When dividing 185 by 428, we get 0 with a remainder of 185.
The number 0 becomes the next digit in our result. 
Result so far: 1510.0
The remainder is 185 after subtracting 0 from 185.
Fetch the next digit (1) from the dividend, attach it to 185 and continue: 1851 / 428

Moving on to step 7:
1851 divided by 428 is 4 with a remainder of 139.
Use 4 as the next digit of our solution. 
Result so far: 15104.0
Subtract 1712 from 1851 to get 139.
Append the next digit (3) from the dividend to 139 and continue with: 1393 / 428

Moving on to step 8:
428 goes into 1393 3 times with a remainder of 109.
Record the quotient 3 as the next digit in the result. 
Result so far: 151043.0
Deduct 1284 from 1393 and we're left with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Let's proceed to step 9:
428 goes into 1090 2 times with a remainder of 234.
Use 2 as the next digit of our solution. 
Result so far: 151043.2
Subtract 856 from 1090 to get 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Moving on to step 10:
When dividing 2340 by 428, we get 5 with a remainder of 200.
Put 5 as the next digit of the answer. 
Result so far: 151043.25
Subtract 2140 from 2340 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 11:
If we divide 2000 by 428, we get 4 and a remainder of 288.
The number 4 becomes the next digit in our result. 
Result so far: 151043.254
Subtracting 1712 from 2000 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 12:
If we divide 2880 by 428, we get 6 and a remainder of 312.
The number 6 becomes the next digit in our result. 
Result so far: 151043.2546
If we take 2568 away from 2880, we end up with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Advancing to step 13:
3120 divided by 428 is 7 with a remainder of 124.
Put 7 as the next digit of the answer. 
Result so far: 151043.25467
If we subtract 2996 from 3120, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Let's proceed to step 14:
When dividing 1240 by 428, we get 2 with a remainder of 384.
The number 2 becomes the next digit in our result. 
Result so far: 151043.254672
Subtract 856 from 1240 to get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Let's proceed to step 15:
If we divide 3840 by 428, we get 8 and a remainder of 416.
The next digit of our result is 8. 
Result so far: 151043.2546728
If we subtract 3424 from 3840, we get 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Step 16:
The number 428 fits into 4160 9 times, leaving a remainder of 308.
Put 9 as the next digit of the answer. 
Result so far: 151043.25467289
Subtracting 3852 from 4160 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

The final result is 151043.25467289 with a remainder of 3.08e-07.