We're dividing 66660654 by 859 
Our goal is to divide 66660654 by 859.

Moving on to step 1:
6 divided by 859 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 859

On to step 2:
859 can be fit into 66 0 times, resulting in a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (6) from the dividend after 66, then repeat: 666 / 859

Advancing to step 3:
The number 859 fits into 666 0 times, leaving a remainder of 666.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 666 after subtracting 0 from 666.
Grab the next digit (6) from the dividend, add it to 666, then carry on: 6666 / 859

Advancing to step 4:
859 can be fit into 6666 7 times, resulting in a remainder of 653.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 6013 from 6666 and we're left with 653.
Include the next digit (0) from the dividend after 653, then repeat: 6530 / 859

On to step 5:
The number 859 fits into 6530 7 times, leaving a remainder of 517.
Put 7 as the next digit of the answer. 
Result so far: 77.0
If we take 6013 away from 6530, we end up with 517.
Append the next digit (6) from the dividend to 517 and continue with: 5176 / 859

Advancing to step 6:
859 can be fit into 5176 6 times, resulting in a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 776.0
Subtracting 5154 from 5176 leaves us with 22.
Append the next digit (5) from the dividend to 22 and continue with: 225 / 859

Advancing to step 7:
The number 859 fits into 225 0 times, leaving a remainder of 225.
Put 0 as the next digit of the answer. 
Result so far: 7760.0
The remainder is 225 after subtracting 0 from 225.
Bring next digit (4) of the dividend behind the 225 and repeat the process: 2254 / 859

Advancing to step 8:
When dividing 2254 by 859, we get 2 with a remainder of 536.
Use 2 as the next digit of our solution. 
Result so far: 77602.0
Deduct 1718 from 2254 and we're left with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

On to step 9:
If we divide 5360 by 859, we get 6 and a remainder of 206.
Record the quotient 6 as the next digit in the result. 
Result so far: 77602.6
Deduct 5154 from 5360 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Advancing to step 10:
If we divide 2060 by 859, we get 2 and a remainder of 342.
Use 2 as the next digit of our solution. 
Result so far: 77602.62
If we take 1718 away from 2060, we end up with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Going ahead to step 11:
3420 divided by 859 is 3 with a remainder of 843.
Put 3 as the next digit of the answer. 
Result so far: 77602.623
Subtracting 2577 from 3420 leaves us with 843.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8430, and continue the process.

Going ahead to step 12:
If we divide 8430 by 859, we get 9 and a remainder of 699.
Use 9 as the next digit of our solution. 
Result so far: 77602.6239
Deduct 7731 from 8430 and we're left with 699.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6990, and continue the process.

Let's proceed to step 13:
The number 859 fits into 6990 8 times, leaving a remainder of 118.
Use 8 as the next digit of our solution. 
Result so far: 77602.62398
Deduct 6872 from 6990 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Advancing to step 14:
When dividing 1180 by 859, we get 1 with a remainder of 321.
Use 1 as the next digit of our solution. 
Result so far: 77602.623981
Subtract 859 from 1180 to get 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Advancing to step 15:
859 goes into 3210 3 times with a remainder of 633.
The number 3 becomes the next digit in our result. 
Result so far: 77602.6239813
The remainder is 633 after subtracting 2577 from 3210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6330, and continue the process.

Let's proceed to step 16:
6330 divided by 859 is 7 with a remainder of 317.
Write down 7 as next digit of the result. 
Result so far: 77602.62398137
Deduct 6013 from 6330 and we're left with 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

In conclusion, the division gives 77602.62398137 with a balance of 3.17e-07.