66971551 ÷ 879 
We want to figure out the number of times 66971551 can be divided by 879.

Advancing to step 1:
6 divided by 879 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 879

Step 2:
879 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Bring next digit (9) of the dividend behind the 66 and repeat the process: 669 / 879

Advancing to step 3:
669 divided by 879 is 0 with a remainder of 669.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 669, we get 669.
Include the next digit (7) from the dividend after 669, then repeat: 6697 / 879

Advancing to step 4:
879 can be fit into 6697 7 times, resulting in a remainder of 544.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 544 after subtracting 6153 from 6697.
Include the next digit (1) from the dividend after 544, then repeat: 5441 / 879

Moving on to step 5:
879 can be fit into 5441 6 times, resulting in a remainder of 167.
Write down 6 as next digit of the result. 
Result so far: 76.0
If we take 5274 away from 5441, we end up with 167.
Bring next digit (5) of the dividend behind the 167 and repeat the process: 1675 / 879

On to step 6:
If we divide 1675 by 879, we get 1 and a remainder of 796.
The number 1 becomes the next digit in our result. 
Result so far: 761.0
If we subtract 879 from 1675, we get 796.
Bring next digit (5) of the dividend behind the 796 and repeat the process: 7965 / 879

Moving on to step 7:
The number 879 fits into 7965 9 times, leaving a remainder of 54.
Put 9 as the next digit of the answer. 
Result so far: 7619.0
Deduct 7911 from 7965 and we're left with 54.
Bring next digit (1) of the dividend behind the 54 and repeat the process: 541 / 879

Let's proceed to step 8:
541 divided by 879 is 0 with a remainder of 541.
Put 0 as the next digit of the answer. 
Result so far: 76190.0
Subtracting 0 from 541 leaves us with 541.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5410, and continue the process.

Going ahead to step 9:
879 can be fit into 5410 6 times, resulting in a remainder of 136.
The number 6 becomes the next digit in our result. 
Result so far: 76190.6
Subtract 5274 from 5410 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Step 10:
When dividing 1360 by 879, we get 1 with a remainder of 481.
The number 1 becomes the next digit in our result. 
Result so far: 76190.61
If we take 879 away from 1360, we end up with 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

On to step 11:
The number 879 fits into 4810 5 times, leaving a remainder of 415.
The next digit of our result is 5. 
Result so far: 76190.615
Subtract 4395 from 4810 to get 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Moving on to step 12:
The number 879 fits into 4150 4 times, leaving a remainder of 634.
Put 4 as the next digit of the answer. 
Result so far: 76190.6154
Deduct 3516 from 4150 and we're left with 634.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6340, and continue the process.

Going ahead to step 13:
The number 879 fits into 6340 7 times, leaving a remainder of 187.
Record the quotient 7 as the next digit in the result. 
Result so far: 76190.61547
Deduct 6153 from 6340 and we're left with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Step 14:
The number 879 fits into 1870 2 times, leaving a remainder of 112.
Put 2 as the next digit of the answer. 
Result so far: 76190.615472
Subtract 1758 from 1870 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 15:
When dividing 1120 by 879, we get 1 with a remainder of 241.
Use 1 as the next digit of our solution. 
Result so far: 76190.6154721
If we subtract 879 from 1120, we get 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Let's proceed to step 16:
879 can be fit into 2410 2 times, resulting in a remainder of 652.
The next digit of our result is 2. 
Result so far: 76190.61547212
Subtracting 1758 from 2410 leaves us with 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

In conclusion, the division gives 76190.61547212 with a balance of 6.52e-07.