90396971 ÷ 377 
The aim is to understand the frequency of 377 in 90396971.

Step 1:
377 can be fit into 9 0 times, resulting in a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 377

On to step 2:
90 divided by 377 is 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 90 and we're left with 90.
Append the next digit (3) from the dividend to 90 and continue with: 903 / 377

Step 3:
When dividing 903 by 377, we get 2 with a remainder of 149.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 754 from 903 leaves us with 149.
Append the next digit (9) from the dividend to 149 and continue with: 1499 / 377

Step 4:
The number 377 fits into 1499 3 times, leaving a remainder of 368.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
If we subtract 1131 from 1499, we get 368.
Fetch the next digit (6) from the dividend, attach it to 368 and continue: 3686 / 377

On to step 5:
3686 divided by 377 is 9 with a remainder of 293.
Record the quotient 9 as the next digit in the result. 
Result so far: 239.0
Deduct 3393 from 3686 and we're left with 293.
Fetch the next digit (9) from the dividend, attach it to 293 and continue: 2939 / 377

Advancing to step 6:
377 can be fit into 2939 7 times, resulting in a remainder of 300.
Record the quotient 7 as the next digit in the result. 
Result so far: 2397.0
Subtract 2639 from 2939 to get 300.
Append the next digit (7) from the dividend to 300 and continue with: 3007 / 377

Moving on to step 7:
377 goes into 3007 7 times with a remainder of 368.
Put 7 as the next digit of the answer. 
Result so far: 23977.0
If we subtract 2639 from 3007, we get 368.
Append the next digit (1) from the dividend to 368 and continue with: 3681 / 377

Let's proceed to step 8:
The number 377 fits into 3681 9 times, leaving a remainder of 288.
Write down 9 as next digit of the result. 
Result so far: 239779.0
If we subtract 3393 from 3681, we get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 9:
2880 divided by 377 is 7 with a remainder of 241.
The next digit of our result is 7. 
Result so far: 239779.7
If we subtract 2639 from 2880, we get 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Advancing to step 10:
If we divide 2410 by 377, we get 6 and a remainder of 148.
The number 6 becomes the next digit in our result. 
Result so far: 239779.76
Deduct 2262 from 2410 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Let's proceed to step 11:
If we divide 1480 by 377, we get 3 and a remainder of 349.
Put 3 as the next digit of the answer. 
Result so far: 239779.763
Subtract 1131 from 1480 to get 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

On to step 12:
377 can be fit into 3490 9 times, resulting in a remainder of 97.
Write down 9 as next digit of the result. 
Result so far: 239779.7639
Deduct 3393 from 3490 and we're left with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Step 13:
The number 377 fits into 970 2 times, leaving a remainder of 216.
Put 2 as the next digit of the answer. 
Result so far: 239779.76392
Subtracting 754 from 970 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 14:
377 can be fit into 2160 5 times, resulting in a remainder of 275.
The number 5 becomes the next digit in our result. 
Result so far: 239779.763925
The remainder is 275 after subtracting 1885 from 2160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

On to step 15:
When dividing 2750 by 377, we get 7 with a remainder of 111.
The number 7 becomes the next digit in our result. 
Result so far: 239779.7639257
Subtracting 2639 from 2750 leaves us with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Step 16:
1110 divided by 377 is 2 with a remainder of 356.
Use 2 as the next digit of our solution. 
Result so far: 239779.76392572
If we subtract 754 from 1110, we get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

In conclusion, the division gives 239779.76392572 with a balance of 3.56e-07.