We look at the division of 45978646 by 689 
Let's see how many times 689 fits into 45978646.

Let's proceed to step 1:
689 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 689

Moving on to step 2:
689 can be fit into 45 0 times, resulting in a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Take the next digit (9) from the dividend and append it to 45, then repeat: 459 / 689

Advancing to step 3:
459 divided by 689 is 0 with a remainder of 459.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 459 and we're left with 459.
Grab the next digit (7) from the dividend, add it to 459, then carry on: 4597 / 689

Moving on to step 4:
If we divide 4597 by 689, we get 6 and a remainder of 463.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 4134 from 4597 and we're left with 463.
Append the next digit (8) from the dividend to 463 and continue with: 4638 / 689

On to step 5:
689 goes into 4638 6 times with a remainder of 504.
Write down 6 as next digit of the result. 
Result so far: 66.0
If we subtract 4134 from 4638, we get 504.
Fetch the next digit (6) from the dividend, attach it to 504 and continue: 5046 / 689

Advancing to step 6:
The number 689 fits into 5046 7 times, leaving a remainder of 223.
Use 7 as the next digit of our solution. 
Result so far: 667.0
Subtract 4823 from 5046 to get 223.
Bring next digit (4) of the dividend behind the 223 and repeat the process: 2234 / 689

Step 7:
The number 689 fits into 2234 3 times, leaving a remainder of 167.
Record the quotient 3 as the next digit in the result. 
Result so far: 6673.0
Deduct 2067 from 2234 and we're left with 167.
Fetch the next digit (6) from the dividend, attach it to 167 and continue: 1676 / 689

Let's proceed to step 8:
If we divide 1676 by 689, we get 2 and a remainder of 298.
The next digit of our result is 2. 
Result so far: 66732.0
If we take 1378 away from 1676, we end up with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Going ahead to step 9:
689 goes into 2980 4 times with a remainder of 224.
Record the quotient 4 as the next digit in the result. 
Result so far: 66732.4
Subtracting 2756 from 2980 leaves us with 224.
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 10:
2240 divided by 689 is 3 with a remainder of 173.
Put 3 as the next digit of the answer. 
Result so far: 66732.43
If we take 2067 away from 2240, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Moving on to step 11:
When dividing 1730 by 689, we get 2 with a remainder of 352.
The number 2 becomes the next digit in our result. 
Result so far: 66732.432
If we take 1378 away from 1730, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Step 12:
When dividing 3520 by 689, we get 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 66732.4325
Deduct 3445 from 3520 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 13:
The number 689 fits into 750 1 times, leaving a remainder of 61.
The number 1 becomes the next digit in our result. 
Result so far: 66732.43251
Subtracting 689 from 750 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 14:
610 divided by 689 is 0 with a remainder of 610.
Put 0 as the next digit of the answer. 
Result so far: 66732.43251
If we take 0 away from 610, we end up with 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Advancing to step 15:
The number 689 fits into 6100 8 times, leaving a remainder of 588.
The number 8 becomes the next digit in our result. 
Result so far: 66732.4325108
If we subtract 5512 from 6100, we get 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

On to step 16:
If we divide 5880 by 689, we get 8 and a remainder of 368.
Record the quotient 8 as the next digit in the result. 
Result so far: 66732.43251088
Deduct 5512 from 5880 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Our division results in 66732.43251088 with a remaining 3.68e-07.