Let's divide 38781991 by 580
We want to figure out the number of times 38781991 can be divided by 580.

Going ahead to step 1:
580 can be fit into 3 0 times, resulting in 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.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 580

Let's proceed to step 2:
If we divide 38 by 580, we get 0 and a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Grab the next digit (7) from the dividend, add it to 38, then carry on: 387 / 580

Moving on to step 3:
If we divide 387 by 580, we get 0 and a remainder of 387.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 387, we end up with 387.
Grab the next digit (8) from the dividend, add it to 387, then carry on: 3878 / 580

Advancing to step 4:
When dividing 3878 by 580, we get 6 with a remainder of 398.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 3480 from 3878 leaves us with 398.
Take the next digit (1) from the dividend and append it to 398, then repeat: 3981 / 580

Step 5:
3981 divided by 580 is 6 with a remainder of 501.
The next digit of our result is 6. 
Result so far: 66.0
The remainder is 501 after subtracting 3480 from 3981.
Bring next digit (9) of the dividend behind the 501 and repeat the process: 5019 / 580

Moving on to step 6:
5019 divided by 580 is 8 with a remainder of 379.
Write down 8 as next digit of the result. 
Result so far: 668.0
If we subtract 4640 from 5019, we get 379.
Fetch the next digit (9) from the dividend, attach it to 379 and continue: 3799 / 580

On to step 7:
When dividing 3799 by 580, we get 6 with a remainder of 319.
Write down 6 as next digit of the result. 
Result so far: 6686.0
Subtract 3480 from 3799 to get 319.
Append the next digit (1) from the dividend to 319 and continue with: 3191 / 580

On to step 8:
3191 divided by 580 is 5 with a remainder of 291.
Write down 5 as next digit of the result. 
Result so far: 66865.0
If we take 2900 away from 3191, we end up with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Advancing to step 9:
2910 divided by 580 is 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 66865.5
If we subtract 2900 from 2910, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
When dividing 100 by 580, we get 0 with a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 66865.5
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 11:
The number 580 fits into 1000 1 times, leaving a remainder of 420.
Write down 1 as next digit of the result. 
Result so far: 66865.501
Deduct 580 from 1000 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 12:
580 goes into 4200 7 times with a remainder of 140.
Record the quotient 7 as the next digit in the result. 
Result so far: 66865.5017
If we subtract 4060 from 4200, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 13:
1400 divided by 580 is 2 with a remainder of 240.
The number 2 becomes the next digit in our result. 
Result so far: 66865.50172
If we take 1160 away from 1400, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 14:
2400 divided by 580 is 4 with a remainder of 80.
Write down 4 as next digit of the result. 
Result so far: 66865.501724
Deduct 2320 from 2400 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 15:
580 can be fit into 800 1 times, resulting in a remainder of 220.
The number 1 becomes the next digit in our result. 
Result so far: 66865.5017241
Deduct 580 from 800 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 16:
580 goes into 2200 3 times with a remainder of 460.
The number 3 becomes the next digit in our result. 
Result so far: 66865.50172413
Subtract 1740 from 2200 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

In conclusion, the division gives 66865.50172413 with a balance of 4.6e-07.