We look at the division of 77861552 by 398 
We want to figure out the number of times 77861552 can be divided by 398.

On to step 1:
When dividing 7 by 398, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 398

Step 2:
The number 398 fits into 77 0 times, leaving a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Take the next digit (8) from the dividend and append it to 77, then repeat: 778 / 398

Step 3:
398 goes into 778 1 times with a remainder of 380.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 398 from 778, we get 380.
Bring next digit (6) of the dividend behind the 380 and repeat the process: 3806 / 398

On to step 4:
When dividing 3806 by 398, we get 9 with a remainder of 224.
Use 9 as the next digit of our solution. 
Result so far: 19.0
The remainder is 224 after subtracting 3582 from 3806.
Include the next digit (1) from the dividend after 224, then repeat: 2241 / 398

Advancing to step 5:
398 can be fit into 2241 5 times, resulting in a remainder of 251.
Put 5 as the next digit of the answer. 
Result so far: 195.0
If we take 1990 away from 2241, we end up with 251.
Include the next digit (5) from the dividend after 251, then repeat: 2515 / 398

Let's proceed to step 6:
The number 398 fits into 2515 6 times, leaving a remainder of 127.
The next digit of our result is 6. 
Result so far: 1956.0
If we take 2388 away from 2515, we end up with 127.
Fetch the next digit (5) from the dividend, attach it to 127 and continue: 1275 / 398

On to step 7:
398 can be fit into 1275 3 times, resulting in a remainder of 81.
Use 3 as the next digit of our solution. 
Result so far: 19563.0
If we subtract 1194 from 1275, we get 81.
Append the next digit (2) from the dividend to 81 and continue with: 812 / 398

Going ahead to step 8:
When dividing 812 by 398, we get 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 195632.0
If we subtract 796 from 812, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
The number 398 fits into 160 0 times, leaving a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 195632.0
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 10:
If we divide 1600 by 398, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 195632.04
Deduct 1592 from 1600 and we're left 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.

On to step 11:
398 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 195632.04
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
800 divided by 398 is 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 195632.0402
Subtracting 796 from 800 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 13:
40 divided by 398 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 195632.0402
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 14:
398 can be fit into 400 1 times, resulting in a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 195632.040201
Subtract 398 from 400 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 15:
398 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 195632.040201
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 16:
If we divide 200 by 398, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 195632.040201
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 195632.040201 with a remainder of 2e-07.