70903483 ÷ 900 
The aim is to understand the frequency of 900 in 70903483.

Moving on to step 1:
When dividing 7 by 900, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 900

Step 2:
When dividing 70 by 900, we get 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Include the next digit (9) from the dividend after 70, then repeat: 709 / 900

On to step 3:
When dividing 709 by 900, we get 0 with a remainder of 709.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 709 and we're left with 709.
Bring next digit (0) of the dividend behind the 709 and repeat the process: 7090 / 900

On to step 4:
900 goes into 7090 7 times with a remainder of 790.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 6300 from 7090 and we're left with 790.
Bring next digit (3) of the dividend behind the 790 and repeat the process: 7903 / 900

Moving on to step 5:
900 goes into 7903 8 times with a remainder of 703.
Use 8 as the next digit of our solution. 
Result so far: 78.0
The remainder is 703 after subtracting 7200 from 7903.
Fetch the next digit (4) from the dividend, attach it to 703 and continue: 7034 / 900

Let's proceed to step 6:
If we divide 7034 by 900, we get 7 and a remainder of 734.
Put 7 as the next digit of the answer. 
Result so far: 787.0
The remainder is 734 after subtracting 6300 from 7034.
Include the next digit (8) from the dividend after 734, then repeat: 7348 / 900

Step 7:
When dividing 7348 by 900, we get 8 with a remainder of 148.
Record the quotient 8 as the next digit in the result. 
Result so far: 7878.0
If we subtract 7200 from 7348, we get 148.
Include the next digit (3) from the dividend after 148, then repeat: 1483 / 900

Let's proceed to step 8:
The number 900 fits into 1483 1 times, leaving a remainder of 583.
Write down 1 as next digit of the result. 
Result so far: 78781.0
If we subtract 900 from 1483, we get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Step 9:
The number 900 fits into 5830 6 times, leaving a remainder of 430.
Use 6 as the next digit of our solution. 
Result so far: 78781.6
If we take 5400 away from 5830, we end up with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Step 10:
The number 900 fits into 4300 4 times, leaving a remainder of 700.
Put 4 as the next digit of the answer. 
Result so far: 78781.64
Subtract 3600 from 4300 to get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Going ahead to step 11:
When dividing 7000 by 900, we get 7 with a remainder of 700.
Write down 7 as next digit of the result. 
Result so far: 78781.647
Subtract 6300 from 7000 to get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Advancing to step 12:
If we divide 7000 by 900, we get 7 and a remainder of 700.
Record the quotient 7 as the next digit in the result. 
Result so far: 78781.6477
Deduct 6300 from 7000 and we're left with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

The final outcome is 78781.6477, with a leftover of 0.007.