We look at the division of 51071738 by 169 
The aim is to understand the frequency of 169 in 51071738.

Advancing to step 1:
169 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 169

Let's proceed to step 2:
If we divide 51 by 169, we get 0 and a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 169

Advancing to step 3:
The number 169 fits into 510 3 times, leaving a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 3 after subtracting 507 from 510.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 169

Moving on to step 4:
169 goes into 37 0 times with a remainder of 37.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
Deduct 0 from 37 and we're left with 37.
Bring next digit (1) of the dividend behind the 37 and repeat the process: 371 / 169

Advancing to step 5:
169 can be fit into 371 2 times, resulting in a remainder of 33.
Use 2 as the next digit of our solution. 
Result so far: 302.0
Subtracting 338 from 371 leaves us with 33.
Take the next digit (7) from the dividend and append it to 33, then repeat: 337 / 169

Let's proceed to step 6:
If we divide 337 by 169, we get 1 and a remainder of 168.
Use 1 as the next digit of our solution. 
Result so far: 3021.0
Subtract 169 from 337 to get 168.
Take the next digit (3) from the dividend and append it to 168, then repeat: 1683 / 169

Moving on to step 7:
The number 169 fits into 1683 9 times, leaving a remainder of 162.
Record the quotient 9 as the next digit in the result. 
Result so far: 30219.0
Subtract 1521 from 1683 to get 162.
Take the next digit (8) from the dividend and append it to 162, then repeat: 1628 / 169

Going ahead to step 8:
169 can be fit into 1628 9 times, resulting in a remainder of 107.
Use 9 as the next digit of our solution. 
Result so far: 302199.0
If we take 1521 away from 1628, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Going ahead to step 9:
When dividing 1070 by 169, we get 6 with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 302199.6
If we subtract 1014 from 1070, 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.

Step 10:
560 divided by 169 is 3 with a remainder of 53.
The next digit of our result is 3. 
Result so far: 302199.63
If we take 507 away from 560, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 11:
530 divided by 169 is 3 with a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 302199.633
If we subtract 507 from 530, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

The quotient of the division is 302199.633, and the remainder is 0.0023.