67978584 divided by 870 
We want to figure out the number of times 67978584 can be divided by 870.

On to step 1:
870 goes into 6 0 times 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.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 870

Step 2:
When dividing 67 by 870, we get 0 with a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 67 to get 67.
Bring next digit (9) of the dividend behind the 67 and repeat the process: 679 / 870

Moving on to step 3:
870 can be fit into 679 0 times, resulting in a remainder of 679.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 679 leaves us with 679.
Bring next digit (7) of the dividend behind the 679 and repeat the process: 6797 / 870

On to step 4:
If we divide 6797 by 870, we get 7 and a remainder of 707.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 6090 from 6797 and we're left with 707.
Include the next digit (8) from the dividend after 707, then repeat: 7078 / 870

Moving on to step 5:
If we divide 7078 by 870, we get 8 and a remainder of 118.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
Subtract 6960 from 7078 to get 118.
Grab the next digit (5) from the dividend, add it to 118, then carry on: 1185 / 870

Moving on to step 6:
870 goes into 1185 1 times with a remainder of 315.
The number 1 becomes the next digit in our result. 
Result so far: 781.0
Deduct 870 from 1185 and we're left with 315.
Bring next digit (8) of the dividend behind the 315 and repeat the process: 3158 / 870

On to step 7:
If we divide 3158 by 870, we get 3 and a remainder of 548.
Record the quotient 3 as the next digit in the result. 
Result so far: 7813.0
The remainder is 548 after subtracting 2610 from 3158.
Include the next digit (4) from the dividend after 548, then repeat: 5484 / 870

Moving on to step 8:
870 can be fit into 5484 6 times, resulting in a remainder of 264.
The next digit of our result is 6. 
Result so far: 78136.0
If we take 5220 away from 5484, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Step 9:
When dividing 2640 by 870, we get 3 with a remainder of 30.
The next digit of our result is 3. 
Result so far: 78136.3
Deduct 2610 from 2640 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
870 can be fit into 300 0 times, resulting in a remainder of 300.
The number 0 becomes the next digit in our result. 
Result so far: 78136.3
The remainder is 300 after subtracting 0 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 11:
The number 870 fits into 3000 3 times, leaving a remainder of 390.
Use 3 as the next digit of our solution. 
Result so far: 78136.303
The remainder is 390 after subtracting 2610 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Advancing to step 12:
The number 870 fits into 3900 4 times, leaving a remainder of 420.
The next digit of our result is 4. 
Result so far: 78136.3034
The remainder is 420 after subtracting 3480 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 13:
870 goes into 4200 4 times with a remainder of 720.
Write down 4 as next digit of the result. 
Result so far: 78136.30344
If we take 3480 away from 4200, we end up with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

The quotient of the division is 78136.30344, and the remainder is 0.00072.