We're dividing 151102 by 21 
Our goal is to divide 151102 by 21.

Advancing to step 1:
If we divide 1 by 21, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 21

On to step 2:
If we divide 15 by 21, we get 0 and a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 21

On to step 3:
151 divided by 21 is 7 with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 147 from 151 to get 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 21

On to step 4:
21 can be fit into 41 1 times, resulting in a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 71.0
The remainder is 20 after subtracting 21 from 41.
Include the next digit (0) from the dividend after 20, then repeat: 200 / 21

Going ahead to step 5:
21 goes into 200 9 times with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 719.0
If we subtract 189 from 200, we get 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 21

Advancing to step 6:
21 can be fit into 112 5 times, resulting in a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 7195.0
Deduct 105 from 112 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 21, we get 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 7195.3
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 8:
21 goes into 70 3 times with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 7195.33
The remainder is 7 after subtracting 63 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 7195.33, with a leftover of 0.007.