Let's divide 70698391 by 16
The aim is to understand the frequency of 16 in 70698391.

On to step 1:
If we divide 7 by 16, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 16

Advancing to step 2:
16 can be fit into 70 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 6 after subtracting 64 from 70.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 16

Going ahead to step 3:
If we divide 66 by 16, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 44.0
Deduct 64 from 66 and we're left with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 16

On to step 4:
If we divide 29 by 16, we get 1 and a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 441.0
If we take 16 away from 29, we end up with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 16

Let's proceed to step 5:
16 can be fit into 138 8 times, resulting in a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 4418.0
The remainder is 10 after subtracting 128 from 138.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 16

Let's proceed to step 6:
When dividing 103 by 16, we get 6 with a remainder of 7.
The next digit of our result is 6. 
Result so far: 44186.0
Subtracting 96 from 103 leaves us with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 16

Advancing to step 7:
79 divided by 16 is 4 with a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 441864.0
If we subtract 64 from 79, we get 15.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 16

Step 8:
16 can be fit into 151 9 times, resulting in a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 4418649.0
Subtracting 144 from 151 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
16 can be fit into 70 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 4418649.4
The remainder is 6 after subtracting 64 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 10:
The number 16 fits into 60 3 times, leaving a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 4418649.43
Deduct 48 from 60 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 11:
16 goes into 120 7 times with a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 4418649.437
If we take 112 away from 120, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
16 goes into 80 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4418649.4375
Deduct 80 from 80 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 13:
The number 16 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4418649.4375
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 14:
0 divided by 16 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4418649.4375
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 4418649.4375, with a leftover of 0.0.