173187 ÷ 77 
We want to figure out the number of times 173187 can be divided by 77.

Step 1:
The number 77 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 77

On to step 2:
77 goes into 17 0 times with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 77

Step 3:
173 divided by 77 is 2 with a remainder of 19.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 154 from 173 and we're left with 19.
Grab the next digit (1) from the dividend, add it to 19, then carry on: 191 / 77

Step 4:
77 goes into 191 2 times with a remainder of 37.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we take 154 away from 191, we end up with 37.
Grab the next digit (8) from the dividend, add it to 37, then carry on: 378 / 77

Let's proceed to step 5:
The number 77 fits into 378 4 times, leaving a remainder of 70.
Put 4 as the next digit of the answer. 
Result so far: 224.0
If we take 308 away from 378, we end up with 70.
Bring next digit (7) of the dividend behind the 70 and repeat the process: 707 / 77

Going ahead to step 6:
77 can be fit into 707 9 times, resulting in a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 2249.0
Subtracting 693 from 707 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
140 divided by 77 is 1 with a remainder of 63.
Use 1 as the next digit of our solution. 
Result so far: 2249.1
If we take 77 away from 140, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 8:
77 can be fit into 630 8 times, resulting in a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 2249.18
If we take 616 away from 630, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 9:
When dividing 140 by 77, we get 1 with a remainder of 63.
Write down 1 as next digit of the result. 
Result so far: 2249.181
Deduct 77 from 140 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Moving on to step 10:
If we divide 630 by 77, we get 8 and a remainder of 14.
The next digit of our result is 8. 
Result so far: 2249.1818
Deduct 616 from 630 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 11:
77 can be fit into 140 1 times, resulting in a remainder of 63.
The next digit of our result is 1. 
Result so far: 2249.18181
If we subtract 77 from 140, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 12:
77 goes into 630 8 times with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 2249.181818
Subtracting 616 from 630 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 13:
The number 77 fits into 140 1 times, leaving a remainder of 63.
The next digit of our result is 1. 
Result so far: 2249.1818181
If we take 77 away from 140, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 14:
77 goes into 630 8 times with a remainder of 14.
The next digit of our result is 8. 
Result so far: 2249.18181818
If we take 616 away from 630, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 2249.18181818 with a balance of 1.4e-08.