We look at the division of 401553 by 51 
We want to divide 401553 by 51.

Moving on to step 1:
51 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 51

Let's proceed to step 2:
51 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Take the next digit (1) from the dividend and append it to 40, then repeat: 401 / 51

Let's proceed to step 3:
401 divided by 51 is 7 with a remainder of 44.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 44 after subtracting 357 from 401.
Bring next digit (5) of the dividend behind the 44 and repeat the process: 445 / 51

Let's proceed to step 4:
When dividing 445 by 51, we get 8 with a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 78.0
Deduct 408 from 445 and we're left with 37.
Take the next digit (5) from the dividend and append it to 37, then repeat: 375 / 51

Moving on to step 5:
When dividing 375 by 51, we get 7 with a remainder of 18.
The next digit of our result is 7. 
Result so far: 787.0
If we take 357 away from 375, we end up with 18.
Append the next digit (3) from the dividend to 18 and continue with: 183 / 51

Advancing to step 6:
51 goes into 183 3 times with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 7873.0
Subtract 153 from 183 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 7:
51 goes into 300 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 7873.5
The remainder is 45 after subtracting 255 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 8:
51 can be fit into 450 8 times, resulting in a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 7873.58
If we subtract 408 from 450, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 9:
51 can be fit into 420 8 times, resulting in a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 7873.588
Subtracting 408 from 420 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 7873.588 with a remainder of 0.0012.