39420984 ÷ 671 
We want to figure out the number of times 39420984 can be divided by 671.

Moving on to step 1:
The number 671 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 671

On to step 2:
The number 671 fits into 39 0 times, leaving a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Fetch the next digit (4) from the dividend, attach it to 39 and continue: 394 / 671

Going ahead to step 3:
671 can be fit into 394 0 times, resulting in a remainder of 394.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 394 and we're left with 394.
Bring next digit (2) of the dividend behind the 394 and repeat the process: 3942 / 671

Going ahead to step 4:
When dividing 3942 by 671, we get 5 with a remainder of 587.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 3355 from 3942 and we're left with 587.
Take the next digit (0) from the dividend and append it to 587, then repeat: 5870 / 671

On to step 5:
5870 divided by 671 is 8 with a remainder of 502.
Use 8 as the next digit of our solution. 
Result so far: 58.0
If we subtract 5368 from 5870, we get 502.
Grab the next digit (9) from the dividend, add it to 502, then carry on: 5029 / 671

On to step 6:
If we divide 5029 by 671, we get 7 and a remainder of 332.
Record the quotient 7 as the next digit in the result. 
Result so far: 587.0
Subtracting 4697 from 5029 leaves us with 332.
Append the next digit (8) from the dividend to 332 and continue with: 3328 / 671

Step 7:
If we divide 3328 by 671, we get 4 and a remainder of 644.
Use 4 as the next digit of our solution. 
Result so far: 5874.0
Subtracting 2684 from 3328 leaves us with 644.
Fetch the next digit (4) from the dividend, attach it to 644 and continue: 6444 / 671

Step 8:
The number 671 fits into 6444 9 times, leaving a remainder of 405.
The number 9 becomes the next digit in our result. 
Result so far: 58749.0
If we subtract 6039 from 6444, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Moving on to step 9:
If we divide 4050 by 671, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 58749.6
Subtract 4026 from 4050 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
The number 671 fits into 240 0 times, leaving a remainder of 240.
Write down 0 as next digit of the result. 
Result so far: 58749.6
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 11:
671 can be fit into 2400 3 times, resulting in a remainder of 387.
The number 3 becomes the next digit in our result. 
Result so far: 58749.603
Subtracting 2013 from 2400 leaves us with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Step 12:
671 goes into 3870 5 times with a remainder of 515.
The next digit of our result is 5. 
Result so far: 58749.6035
If we subtract 3355 from 3870, we get 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Going ahead to step 13:
671 can be fit into 5150 7 times, resulting in a remainder of 453.
The next digit of our result is 7. 
Result so far: 58749.60357
Deduct 4697 from 5150 and we're left with 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

Let's proceed to step 14:
4530 divided by 671 is 6 with a remainder of 504.
Record the quotient 6 as the next digit in the result. 
Result so far: 58749.603576
If we take 4026 away from 4530, we end up with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Advancing to step 15:
If we divide 5040 by 671, we get 7 and a remainder of 343.
The next digit of our result is 7. 
Result so far: 58749.6035767
The remainder is 343 after subtracting 4697 from 5040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Step 16:
When dividing 3430 by 671, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 58749.60357675
Subtract 3355 from 3430 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

After the division, we end up with 58749.60357675 and a remainder of 7.5e-08.