We look at the division of 37121505 by 777 
The aim is to understand the frequency of 777 in 37121505.

Advancing to step 1:
3 divided by 777 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 777

On to step 2:
If we divide 37 by 777, we get 0 and a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 37 leaves us with 37.
Include the next digit (1) from the dividend after 37, then repeat: 371 / 777

Going ahead to step 3:
371 divided by 777 is 0 with a remainder of 371.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 371, we get 371.
Fetch the next digit (2) from the dividend, attach it to 371 and continue: 3712 / 777

Going ahead to step 4:
If we divide 3712 by 777, we get 4 and a remainder of 604.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 3108 from 3712 and we're left with 604.
Take the next digit (1) from the dividend and append it to 604, then repeat: 6041 / 777

Step 5:
6041 divided by 777 is 7 with a remainder of 602.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
If we subtract 5439 from 6041, we get 602.
Bring next digit (5) of the dividend behind the 602 and repeat the process: 6025 / 777

Going ahead to step 6:
The number 777 fits into 6025 7 times, leaving a remainder of 586.
The number 7 becomes the next digit in our result. 
Result so far: 477.0
Deduct 5439 from 6025 and we're left with 586.
Take the next digit (0) from the dividend and append it to 586, then repeat: 5860 / 777

Step 7:
777 goes into 5860 7 times with a remainder of 421.
The next digit of our result is 7. 
Result so far: 4777.0
If we take 5439 away from 5860, we end up with 421.
Include the next digit (5) from the dividend after 421, then repeat: 4215 / 777

Let's proceed to step 8:
4215 divided by 777 is 5 with a remainder of 330.
The number 5 becomes the next digit in our result. 
Result so far: 47775.0
The remainder is 330 after subtracting 3885 from 4215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Let's proceed to step 9:
3300 divided by 777 is 4 with a remainder of 192.
Use 4 as the next digit of our solution. 
Result so far: 47775.4
If we take 3108 away from 3300, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 10:
The number 777 fits into 1920 2 times, leaving a remainder of 366.
Write down 2 as next digit of the result. 
Result so far: 47775.42
Subtracting 1554 from 1920 leaves us with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 11:
777 goes into 3660 4 times with a remainder of 552.
The number 4 becomes the next digit in our result. 
Result so far: 47775.424
If we take 3108 away from 3660, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Advancing to step 12:
777 can be fit into 5520 7 times, resulting in a remainder of 81.
Put 7 as the next digit of the answer. 
Result so far: 47775.4247
Subtracting 5439 from 5520 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 13:
When dividing 810 by 777, we get 1 with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 47775.42471
Deduct 777 from 810 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 14:
777 goes into 330 0 times with a remainder of 330.
Write down 0 as next digit of the result. 
Result so far: 47775.42471
If we subtract 0 from 330, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Going ahead to step 15:
3300 divided by 777 is 4 with a remainder of 192.
Write down 4 as next digit of the result. 
Result so far: 47775.4247104
Deduct 3108 from 3300 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 16:
When dividing 1920 by 777, we get 2 with a remainder of 366.
Use 2 as the next digit of our solution. 
Result so far: 47775.42471042
Subtract 1554 from 1920 to get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

The final result is 47775.42471042 with a remainder of 3.66e-07.