187691 ÷ 78 
We want to figure out the number of times 187691 can be divided by 78.

Let's proceed to step 1:
1 divided by 78 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 78

Let's proceed to step 2:
If we divide 18 by 78, we get 0 and a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Fetch the next digit (7) from the dividend, attach it to 18 and continue: 187 / 78

Advancing to step 3:
When dividing 187 by 78, we get 2 with a remainder of 31.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 156 away from 187, we end up with 31.
Fetch the next digit (6) from the dividend, attach it to 31 and continue: 316 / 78

Moving on to step 4:
78 can be fit into 316 4 times, resulting in a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 24.0
If we subtract 312 from 316, we get 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 78

Advancing to step 5:
49 divided by 78 is 0 with a remainder of 49.
Write down 0 as next digit of the result. 
Result so far: 240.0
If we subtract 0 from 49, we get 49.
Grab the next digit (1) from the dividend, add it to 49, then carry on: 491 / 78

Going ahead to step 6:
If we divide 491 by 78, we get 6 and a remainder of 23.
Write down 6 as next digit of the result. 
Result so far: 2406.0
Deduct 468 from 491 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 7:
When dividing 230 by 78, we get 2 with a remainder of 74.
The next digit of our result is 2. 
Result so far: 2406.2
Subtract 156 from 230 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 8:
The number 78 fits into 740 9 times, leaving a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 2406.29
The remainder is 38 after subtracting 702 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
When dividing 380 by 78, we get 4 with a remainder of 68.
The number 4 becomes the next digit in our result. 
Result so far: 2406.294
Subtract 312 from 380 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 10:
The number 78 fits into 680 8 times, leaving a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 2406.2948
If we subtract 624 from 680, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
If we divide 560 by 78, we get 7 and a remainder of 14.
The next digit of our result is 7. 
Result so far: 2406.29487
Subtract 546 from 560 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 12:
78 goes into 140 1 times with a remainder of 62.
Record the quotient 1 as the next digit in the result. 
Result so far: 2406.294871
Subtract 78 from 140 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 13:
When dividing 620 by 78, we get 7 with a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 2406.2948717
Subtract 546 from 620 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 14:
When dividing 740 by 78, we get 9 with a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 2406.29487179
Subtract 702 from 740 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

After the division, we end up with 2406.29487179 and a remainder of 3.8e-08.