We're dividing 64345139 by 312 
Let's see how many times 312 fits into 64345139.

Going ahead to step 1:
6 divided by 312 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 312

Step 2:
312 can be fit into 64 0 times, resulting in a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Append the next digit (3) from the dividend to 64 and continue with: 643 / 312

Moving on to step 3:
312 can be fit into 643 2 times, resulting in a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 624 from 643 to get 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 312

Moving on to step 4:
194 divided by 312 is 0 with a remainder of 194.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtract 0 from 194 to get 194.
Fetch the next digit (5) from the dividend, attach it to 194 and continue: 1945 / 312

Let's proceed to step 5:
If we divide 1945 by 312, we get 6 and a remainder of 73.
The next digit of our result is 6. 
Result so far: 206.0
Deduct 1872 from 1945 and we're left with 73.
Take the next digit (1) from the dividend and append it to 73, then repeat: 731 / 312

Going ahead to step 6:
When dividing 731 by 312, we get 2 with a remainder of 107.
Write down 2 as next digit of the result. 
Result so far: 2062.0
The remainder is 107 after subtracting 624 from 731.
Take the next digit (3) from the dividend and append it to 107, then repeat: 1073 / 312

Step 7:
When dividing 1073 by 312, we get 3 with a remainder of 137.
Use 3 as the next digit of our solution. 
Result so far: 20623.0
Subtracting 936 from 1073 leaves us with 137.
Bring next digit (9) of the dividend behind the 137 and repeat the process: 1379 / 312

Moving on to step 8:
312 can be fit into 1379 4 times, resulting in a remainder of 131.
Use 4 as the next digit of our solution. 
Result so far: 206234.0
Subtracting 1248 from 1379 leaves us with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Advancing to step 9:
312 goes into 1310 4 times with a remainder of 62.
Use 4 as the next digit of our solution. 
Result so far: 206234.4
Deduct 1248 from 1310 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 10:
312 goes into 620 1 times with a remainder of 308.
The number 1 becomes the next digit in our result. 
Result so far: 206234.41
If we take 312 away from 620, we end up 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.

Advancing to step 11:
312 goes into 3080 9 times with a remainder of 272.
Use 9 as the next digit of our solution. 
Result so far: 206234.419
Subtract 2808 from 3080 to get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

On to step 12:
312 goes into 2720 8 times with a remainder of 224.
Put 8 as the next digit of the answer. 
Result so far: 206234.4198
The remainder is 224 after subtracting 2496 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 13:
If we divide 2240 by 312, we get 7 and a remainder of 56.
Use 7 as the next digit of our solution. 
Result so far: 206234.41987
Deduct 2184 from 2240 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 14:
560 divided by 312 is 1 with a remainder of 248.
Put 1 as the next digit of the answer. 
Result so far: 206234.419871
The remainder is 248 after subtracting 312 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Advancing to step 15:
When dividing 2480 by 312, we get 7 with a remainder of 296.
Record the quotient 7 as the next digit in the result. 
Result so far: 206234.4198717
Subtract 2184 from 2480 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Moving on to step 16:
2960 divided by 312 is 9 with a remainder of 152.
Put 9 as the next digit of the answer. 
Result so far: 206234.41987179
If we take 2808 away from 2960, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

After the division, we end up with 206234.41987179 and a remainder of 1.52e-07.