We look at the division of 66258201 by 158 
We want to divide 66258201 by 158.

Let's proceed to step 1:
When dividing 6 by 158, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 158

Let's proceed to step 2:
158 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Include the next digit (2) from the dividend after 66, then repeat: 662 / 158

On to step 3:
If we divide 662 by 158, we get 4 and a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 30 after subtracting 632 from 662.
Fetch the next digit (5) from the dividend, attach it to 30 and continue: 305 / 158

Moving on to step 4:
305 divided by 158 is 1 with a remainder of 147.
Write down 1 as next digit of the result. 
Result so far: 41.0
Subtracting 158 from 305 leaves us with 147.
Fetch the next digit (8) from the dividend, attach it to 147 and continue: 1478 / 158

Moving on to step 5:
If we divide 1478 by 158, we get 9 and a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 419.0
The remainder is 56 after subtracting 1422 from 1478.
Take the next digit (2) from the dividend and append it to 56, then repeat: 562 / 158

Step 6:
When dividing 562 by 158, we get 3 with a remainder of 88.
Record the quotient 3 as the next digit in the result. 
Result so far: 4193.0
Subtract 474 from 562 to get 88.
Take the next digit (0) from the dividend and append it to 88, then repeat: 880 / 158

Moving on to step 7:
If we divide 880 by 158, we get 5 and a remainder of 90.
Write down 5 as next digit of the result. 
Result so far: 41935.0
Subtracting 790 from 880 leaves us with 90.
Fetch the next digit (1) from the dividend, attach it to 90 and continue: 901 / 158

Step 8:
If we divide 901 by 158, we get 5 and a remainder of 111.
The next digit of our result is 5. 
Result so far: 419355.0
If we subtract 790 from 901, we get 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Step 9:
158 can be fit into 1110 7 times, resulting in a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 419355.7
Deduct 1106 from 1110 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
If we divide 40 by 158, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 419355.7
If we subtract 0 from 40, we get 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 11:
158 goes into 400 2 times with a remainder of 84.
Write down 2 as next digit of the result. 
Result so far: 419355.702
Deduct 316 from 400 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 12:
If we divide 840 by 158, we get 5 and a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 419355.7025
Deduct 790 from 840 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 13:
158 can be fit into 500 3 times, resulting in a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 419355.70253
If we take 474 away from 500, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 14:
158 can be fit into 260 1 times, resulting in a remainder of 102.
Use 1 as the next digit of our solution. 
Result so far: 419355.702531
Deduct 158 from 260 and we're left with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Going ahead to step 15:
The number 158 fits into 1020 6 times, leaving a remainder of 72.
The next digit of our result is 6. 
Result so far: 419355.7025316
Deduct 948 from 1020 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 16:
When dividing 720 by 158, we get 4 with a remainder of 88.
Put 4 as the next digit of the answer. 
Result so far: 419355.70253164
Subtracting 632 from 720 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The final result is 419355.70253164 with a remainder of 8.8e-08.