We look at the division of 91799138 by 402 
The aim is to understand the frequency of 402 in 91799138.

Step 1:
402 can be fit into 9 0 times, resulting in a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 402

Advancing to step 2:
When dividing 91 by 402, we get 0 with a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Include the next digit (7) from the dividend after 91, then repeat: 917 / 402

On to step 3:
402 can be fit into 917 2 times, resulting in a remainder of 113.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 113 after subtracting 804 from 917.
Append the next digit (9) from the dividend to 113 and continue with: 1139 / 402

On to step 4:
If we divide 1139 by 402, we get 2 and a remainder of 335.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtracting 804 from 1139 leaves us with 335.
Take the next digit (9) from the dividend and append it to 335, then repeat: 3359 / 402

Let's proceed to step 5:
402 can be fit into 3359 8 times, resulting in a remainder of 143.
Use 8 as the next digit of our solution. 
Result so far: 228.0
The remainder is 143 after subtracting 3216 from 3359.
Append the next digit (1) from the dividend to 143 and continue with: 1431 / 402

Let's proceed to step 6:
If we divide 1431 by 402, we get 3 and a remainder of 225.
The number 3 becomes the next digit in our result. 
Result so far: 2283.0
Deduct 1206 from 1431 and we're left with 225.
Include the next digit (3) from the dividend after 225, then repeat: 2253 / 402

On to step 7:
402 can be fit into 2253 5 times, resulting in a remainder of 243.
The next digit of our result is 5. 
Result so far: 22835.0
If we subtract 2010 from 2253, we get 243.
Bring next digit (8) of the dividend behind the 243 and repeat the process: 2438 / 402

Step 8:
The number 402 fits into 2438 6 times, leaving a remainder of 26.
Record the quotient 6 as the next digit in the result. 
Result so far: 228356.0
Deduct 2412 from 2438 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
When dividing 260 by 402, we get 0 with a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 228356.0
Subtract 0 from 260 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 10:
If we divide 2600 by 402, we get 6 and a remainder of 188.
Put 6 as the next digit of the answer. 
Result so far: 228356.06
If we subtract 2412 from 2600, we get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 11:
402 can be fit into 1880 4 times, resulting in a remainder of 272.
Use 4 as the next digit of our solution. 
Result so far: 228356.064
If we take 1608 away from 1880, we end up with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 12:
The number 402 fits into 2720 6 times, leaving a remainder of 308.
Record the quotient 6 as the next digit in the result. 
Result so far: 228356.0646
If we subtract 2412 from 2720, we get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 13:
The number 402 fits into 3080 7 times, leaving a remainder of 266.
Record the quotient 7 as the next digit in the result. 
Result so far: 228356.06467
The remainder is 266 after subtracting 2814 from 3080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Going ahead to step 14:
The number 402 fits into 2660 6 times, leaving a remainder of 248.
Record the quotient 6 as the next digit in the result. 
Result so far: 228356.064676
If we take 2412 away from 2660, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 15:
When dividing 2480 by 402, we get 6 with a remainder of 68.
Record the quotient 6 as the next digit in the result. 
Result so far: 228356.0646766
If we subtract 2412 from 2480, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

After the division, we end up with 228356.0646766 and a remainder of 6.8e-07.