Let's divide 87638720 by 77
We want to figure out the number of times 87638720 can be divided by 77.

Going ahead to step 1:
8 divided by 77 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 77

Going ahead to step 2:
77 goes into 87 1 times with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 10 after subtracting 77 from 87.
Take the next digit (6) from the dividend and append it to 10, then repeat: 106 / 77

Step 3:
77 goes into 106 1 times with a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
The remainder is 29 after subtracting 77 from 106.
Grab the next digit (3) from the dividend, add it to 29, then carry on: 293 / 77

Moving on to step 4:
77 can be fit into 293 3 times, resulting in a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 113.0
Subtract 231 from 293 to get 62.
Include the next digit (8) from the dividend after 62, then repeat: 628 / 77

Moving on to step 5:
The number 77 fits into 628 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 1138.0
Subtract 616 from 628 to get 12.
Append the next digit (7) from the dividend to 12 and continue with: 127 / 77

Going ahead to step 6:
127 divided by 77 is 1 with a remainder of 50.
Put 1 as the next digit of the answer. 
Result so far: 11381.0
Subtracting 77 from 127 leaves us with 50.
Take the next digit (2) from the dividend and append it to 50, then repeat: 502 / 77

On to step 7:
When dividing 502 by 77, we get 6 with a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 113816.0
If we take 462 away from 502, we end up with 40.
Take the next digit (0) from the dividend and append it to 40, then repeat: 400 / 77

Step 8:
When dividing 400 by 77, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 1138165.0
If we take 385 away from 400, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 9:
If we divide 150 by 77, we get 1 and a remainder of 73.
Put 1 as the next digit of the answer. 
Result so far: 1138165.1
Subtract 77 from 150 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 10:
77 goes into 730 9 times with a remainder of 37.
Record the quotient 9 as the next digit in the result. 
Result so far: 1138165.19
If we subtract 693 from 730, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 11:
370 divided by 77 is 4 with a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 1138165.194
Subtract 308 from 370 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 12:
77 can be fit into 620 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 1138165.1948
If we subtract 616 from 620, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 13:
When dividing 40 by 77, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 1138165.1948
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.

Let's proceed to step 14:
When dividing 400 by 77, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 1138165.194805
If we subtract 385 from 400, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 15:
77 can be fit into 150 1 times, resulting in a remainder of 73.
Put 1 as the next digit of the answer. 
Result so far: 1138165.1948051
If we subtract 77 from 150, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 16:
If we divide 730 by 77, we get 9 and a remainder of 37.
The next digit of our result is 9. 
Result so far: 1138165.19480519
If we subtract 693 from 730, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Our division results in 1138165.19480519 with a remaining 3.7e-08.