We're dividing 78770551 by 53 
We want to divide 78770551 by 53.

Let's proceed to step 1:
53 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 53

Going ahead to step 2:
78 divided by 53 is 1 with a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 53 away from 78, we end up with 25.
Grab the next digit (7) from the dividend, add it to 25, then carry on: 257 / 53

Let's proceed to step 3:
257 divided by 53 is 4 with a remainder of 45.
The next digit of our result is 4. 
Result so far: 14.0
Deduct 212 from 257 and we're left with 45.
Take the next digit (7) from the dividend and append it to 45, then repeat: 457 / 53

Let's proceed to step 4:
When dividing 457 by 53, we get 8 with a remainder of 33.
Write down 8 as next digit of the result. 
Result so far: 148.0
Subtracting 424 from 457 leaves us with 33.
Include the next digit (0) from the dividend after 33, then repeat: 330 / 53

Step 5:
When dividing 330 by 53, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 1486.0
Subtracting 318 from 330 leaves us with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 53

Advancing to step 6:
53 goes into 125 2 times with a remainder of 19.
Record the quotient 2 as the next digit in the result. 
Result so far: 14862.0
Deduct 106 from 125 and we're left with 19.
Bring next digit (5) of the dividend behind the 19 and repeat the process: 195 / 53

Step 7:
When dividing 195 by 53, we get 3 with a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 148623.0
If we take 159 away from 195, we end up with 36.
Take the next digit (1) from the dividend and append it to 36, then repeat: 361 / 53

Let's proceed to step 8:
53 goes into 361 6 times with a remainder of 43.
Record the quotient 6 as the next digit in the result. 
Result so far: 1486236.0
If we subtract 318 from 361, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 9:
When dividing 430 by 53, we get 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 1486236.8
Subtract 424 from 430 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
The number 53 fits into 60 1 times, leaving a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1486236.81
The remainder is 7 after subtracting 53 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 11:
If we divide 70 by 53, we get 1 and a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1486236.811
Subtract 53 from 70 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 1486236.811 and a remainder of 0.0017.