We're dividing 12388999 by 577 
We want to figure out the number of times 12388999 can be divided by 577.

Advancing to step 1:
If we divide 1 by 577, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 577

Moving on to step 2:
12 divided by 577 is 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 577

Let's proceed to step 3:
The number 577 fits into 123 0 times, leaving a remainder of 123.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 123 after subtracting 0 from 123.
Bring next digit (8) of the dividend behind the 123 and repeat the process: 1238 / 577

Advancing to step 4:
The number 577 fits into 1238 2 times, leaving a remainder of 84.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 1154 from 1238 and we're left with 84.
Append the next digit (8) from the dividend to 84 and continue with: 848 / 577

Going ahead to step 5:
When dividing 848 by 577, we get 1 with a remainder of 271.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
If we subtract 577 from 848, we get 271.
Fetch the next digit (9) from the dividend, attach it to 271 and continue: 2719 / 577

Going ahead to step 6:
577 goes into 2719 4 times with a remainder of 411.
Record the quotient 4 as the next digit in the result. 
Result so far: 214.0
If we subtract 2308 from 2719, we get 411.
Bring next digit (9) of the dividend behind the 411 and repeat the process: 4119 / 577

Advancing to step 7:
The number 577 fits into 4119 7 times, leaving a remainder of 80.
Use 7 as the next digit of our solution. 
Result so far: 2147.0
The remainder is 80 after subtracting 4039 from 4119.
Grab the next digit (9) from the dividend, add it to 80, then carry on: 809 / 577

Advancing to step 8:
809 divided by 577 is 1 with a remainder of 232.
The number 1 becomes the next digit in our result. 
Result so far: 21471.0
If we take 577 away from 809, we end up with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Advancing to step 9:
577 goes into 2320 4 times with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 21471.4
The remainder is 12 after subtracting 2308 from 2320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 10:
The number 577 fits into 120 0 times, leaving a remainder of 120.
The next digit of our result is 0. 
Result so far: 21471.4
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 11:
When dividing 1200 by 577, we get 2 with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 21471.402
Subtracting 1154 from 1200 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 12:
577 can be fit into 460 0 times, resulting in a remainder of 460.
Record the quotient 0 as the next digit in the result. 
Result so far: 21471.402
If we take 0 away from 460, we end up with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 13:
If we divide 4600 by 577, we get 7 and a remainder of 561.
Use 7 as the next digit of our solution. 
Result so far: 21471.40207
Deduct 4039 from 4600 and we're left with 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

Going ahead to step 14:
5610 divided by 577 is 9 with a remainder of 417.
Record the quotient 9 as the next digit in the result. 
Result so far: 21471.402079
Subtracting 5193 from 5610 leaves us with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Moving on to step 15:
577 goes into 4170 7 times with a remainder of 131.
Put 7 as the next digit of the answer. 
Result so far: 21471.4020797
Deduct 4039 from 4170 and we're left 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 16:
The number 577 fits into 1310 2 times, leaving a remainder of 156.
Use 2 as the next digit of our solution. 
Result so far: 21471.40207972
Subtract 1154 from 1310 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

After the division, we end up with 21471.40207972 and a remainder of 1.56e-07.