We look at the division of 151644 by 51 
We're looking to find how many times 51 goes into 151644.

Advancing to step 1:
1 divided by 51 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 51

On to step 2:
51 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 51

Going ahead to step 3:
51 can be fit into 151 2 times, resulting in a remainder of 49.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 49 after subtracting 102 from 151.
Fetch the next digit (6) from the dividend, attach it to 49 and continue: 496 / 51

Going ahead to step 4:
51 can be fit into 496 9 times, resulting in a remainder of 37.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Deduct 459 from 496 and we're left with 37.
Append the next digit (4) from the dividend to 37 and continue with: 374 / 51

Moving on to step 5:
374 divided by 51 is 7 with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 297.0
Subtracting 357 from 374 leaves us with 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 51

Step 6:
51 can be fit into 174 3 times, resulting in a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 2973.0
Deduct 153 from 174 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
51 can be fit into 210 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 2973.4
If we take 204 away from 210, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
When dividing 60 by 51, we get 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 2973.41
Subtracting 51 from 60 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
The number 51 fits into 90 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 2973.411
The remainder is 39 after subtracting 51 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 2973.411, with a leftover of 0.0039.