We look at the division of 87663751 by 778 
The aim is to understand the frequency of 778 in 87663751.

On to step 1:
If we divide 8 by 778, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 778

Going ahead to step 2:
778 goes into 87 0 times with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Include the next digit (6) from the dividend after 87, then repeat: 876 / 778

Let's proceed to step 3:
778 goes into 876 1 times with a remainder of 98.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 778 away from 876, we end up with 98.
Take the next digit (6) from the dividend and append it to 98, then repeat: 986 / 778

Let's proceed to step 4:
If we divide 986 by 778, we get 1 and a remainder of 208.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we subtract 778 from 986, we get 208.
Take the next digit (3) from the dividend and append it to 208, then repeat: 2083 / 778

On to step 5:
778 can be fit into 2083 2 times, resulting in a remainder of 527.
Write down 2 as next digit of the result. 
Result so far: 112.0
The remainder is 527 after subtracting 1556 from 2083.
Bring next digit (7) of the dividend behind the 527 and repeat the process: 5277 / 778

Advancing to step 6:
778 goes into 5277 6 times with a remainder of 609.
The number 6 becomes the next digit in our result. 
Result so far: 1126.0
Subtract 4668 from 5277 to get 609.
Bring next digit (5) of the dividend behind the 609 and repeat the process: 6095 / 778

Advancing to step 7:
The number 778 fits into 6095 7 times, leaving a remainder of 649.
The number 7 becomes the next digit in our result. 
Result so far: 11267.0
If we take 5446 away from 6095, we end up with 649.
Fetch the next digit (1) from the dividend, attach it to 649 and continue: 6491 / 778

Let's proceed to step 8:
778 can be fit into 6491 8 times, resulting in a remainder of 267.
The number 8 becomes the next digit in our result. 
Result so far: 112678.0
If we subtract 6224 from 6491, we get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Step 9:
2670 divided by 778 is 3 with a remainder of 336.
The next digit of our result is 3. 
Result so far: 112678.3
The remainder is 336 after subtracting 2334 from 2670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Going ahead to step 10:
3360 divided by 778 is 4 with a remainder of 248.
Put 4 as the next digit of the answer. 
Result so far: 112678.34
Deduct 3112 from 3360 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 11:
When dividing 2480 by 778, we get 3 with a remainder of 146.
Use 3 as the next digit of our solution. 
Result so far: 112678.343
Deduct 2334 from 2480 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Step 12:
The number 778 fits into 1460 1 times, leaving a remainder of 682.
The number 1 becomes the next digit in our result. 
Result so far: 112678.3431
Deduct 778 from 1460 and we're left with 682.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6820, and continue the process.

Going ahead to step 13:
If we divide 6820 by 778, we get 8 and a remainder of 596.
The number 8 becomes the next digit in our result. 
Result so far: 112678.34318
Subtract 6224 from 6820 to get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Advancing to step 14:
The number 778 fits into 5960 7 times, leaving a remainder of 514.
The number 7 becomes the next digit in our result. 
Result so far: 112678.343187
Deduct 5446 from 5960 and we're left with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Moving on to step 15:
5140 divided by 778 is 6 with a remainder of 472.
The next digit of our result is 6. 
Result so far: 112678.3431876
Subtract 4668 from 5140 to get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

Step 16:
778 can be fit into 4720 6 times, resulting in a remainder of 52.
The next digit of our result is 6. 
Result so far: 112678.34318766
If we subtract 4668 from 4720, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Our division results in 112678.34318766 with a remaining 5.2e-08.