We're dividing 73936430 by 977 
The aim is to understand the frequency of 977 in 73936430.

On to step 1:
The number 977 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 977

Moving on to step 2:
When dividing 73 by 977, we get 0 with a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 73, we get 73.
Fetch the next digit (9) from the dividend, attach it to 73 and continue: 739 / 977

Step 3:
977 goes into 739 0 times with a remainder of 739.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 739 leaves us with 739.
Append the next digit (3) from the dividend to 739 and continue with: 7393 / 977

Advancing to step 4:
The number 977 fits into 7393 7 times, leaving a remainder of 554.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 6839 from 7393 and we're left with 554.
Bring next digit (6) of the dividend behind the 554 and repeat the process: 5546 / 977

On to step 5:
5546 divided by 977 is 5 with a remainder of 661.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
Deduct 4885 from 5546 and we're left with 661.
Fetch the next digit (4) from the dividend, attach it to 661 and continue: 6614 / 977

Let's proceed to step 6:
If we divide 6614 by 977, we get 6 and a remainder of 752.
Record the quotient 6 as the next digit in the result. 
Result so far: 756.0
Subtracting 5862 from 6614 leaves us with 752.
Grab the next digit (3) from the dividend, add it to 752, then carry on: 7523 / 977

Let's proceed to step 7:
When dividing 7523 by 977, we get 7 with a remainder of 684.
The next digit of our result is 7. 
Result so far: 7567.0
Subtract 6839 from 7523 to get 684.
Grab the next digit (0) from the dividend, add it to 684, then carry on: 6840 / 977

Step 8:
6840 divided by 977 is 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 75677.0
Subtracting 6839 from 6840 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
10 divided by 977 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 75677.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
If we divide 100 by 977, we get 0 and a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 75677.0
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Our division results in 75677.0 with a remaining 0.1.