51678944 divided by 685 
We want to figure out the number of times 51678944 can be divided by 685.

Going ahead to step 1:
When dividing 5 by 685, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 685

Let's proceed to step 2:
The number 685 fits into 51 0 times, leaving a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Append the next digit (6) from the dividend to 51 and continue with: 516 / 685

Going ahead to step 3:
When dividing 516 by 685, we get 0 with a remainder of 516.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 516 leaves us with 516.
Bring next digit (7) of the dividend behind the 516 and repeat the process: 5167 / 685

Let's proceed to step 4:
5167 divided by 685 is 7 with a remainder of 372.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 4795 from 5167, we get 372.
Append the next digit (8) from the dividend to 372 and continue with: 3728 / 685

Step 5:
3728 divided by 685 is 5 with a remainder of 303.
Put 5 as the next digit of the answer. 
Result so far: 75.0
Subtract 3425 from 3728 to get 303.
Bring next digit (9) of the dividend behind the 303 and repeat the process: 3039 / 685

Advancing to step 6:
If we divide 3039 by 685, we get 4 and a remainder of 299.
Put 4 as the next digit of the answer. 
Result so far: 754.0
Deduct 2740 from 3039 and we're left with 299.
Append the next digit (4) from the dividend to 299 and continue with: 2994 / 685

Advancing to step 7:
2994 divided by 685 is 4 with a remainder of 254.
The next digit of our result is 4. 
Result so far: 7544.0
Subtracting 2740 from 2994 leaves us with 254.
Append the next digit (4) from the dividend to 254 and continue with: 2544 / 685

On to step 8:
The number 685 fits into 2544 3 times, leaving a remainder of 489.
The next digit of our result is 3. 
Result so far: 75443.0
Subtracting 2055 from 2544 leaves us with 489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Moving on to step 9:
If we divide 4890 by 685, we get 7 and a remainder of 95.
Put 7 as the next digit of the answer. 
Result so far: 75443.7
The remainder is 95 after subtracting 4795 from 4890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Advancing to step 10:
When dividing 950 by 685, we get 1 with a remainder of 265.
Use 1 as the next digit of our solution. 
Result so far: 75443.71
If we take 685 away from 950, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

On to step 11:
685 goes into 2650 3 times with a remainder of 595.
Put 3 as the next digit of the answer. 
Result so far: 75443.713
Subtract 2055 from 2650 to get 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Advancing to step 12:
If we divide 5950 by 685, we get 8 and a remainder of 470.
The number 8 becomes the next digit in our result. 
Result so far: 75443.7138
If we subtract 5480 from 5950, we get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 13:
The number 685 fits into 4700 6 times, leaving a remainder of 590.
The next digit of our result is 6. 
Result so far: 75443.71386
If we subtract 4110 from 4700, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Moving on to step 14:
5900 divided by 685 is 8 with a remainder of 420.
Put 8 as the next digit of the answer. 
Result so far: 75443.713868
If we subtract 5480 from 5900, we get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Step 15:
The number 685 fits into 4200 6 times, leaving a remainder of 90.
Record the quotient 6 as the next digit in the result. 
Result so far: 75443.7138686
If we take 4110 away from 4200, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 16:
The number 685 fits into 900 1 times, leaving a remainder of 215.
Use 1 as the next digit of our solution. 
Result so far: 75443.71386861
If we subtract 685 from 900, we get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

After the division, we end up with 75443.71386861 and a remainder of 2.15e-07.