1209487 ÷ 901 
Our goal is to divide 1209487 by 901.

Moving on to step 1:
If we divide 1 by 901, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 901

Advancing to step 2:
If we divide 12 by 901, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 901

Moving on to step 3:
120 divided by 901 is 0 with a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 120, we end up with 120.
Append the next digit (9) from the dividend to 120 and continue with: 1209 / 901

Going ahead to step 4:
When dividing 1209 by 901, we get 1 with a remainder of 308.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 901 away from 1209, we end up with 308.
Append the next digit (4) from the dividend to 308 and continue with: 3084 / 901

Step 5:
3084 divided by 901 is 3 with a remainder of 381.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtract 2703 from 3084 to get 381.
Bring next digit (8) of the dividend behind the 381 and repeat the process: 3818 / 901

On to step 6:
3818 divided by 901 is 4 with a remainder of 214.
Put 4 as the next digit of the answer. 
Result so far: 134.0
Subtract 3604 from 3818 to get 214.
Append the next digit (7) from the dividend to 214 and continue with: 2147 / 901

On to step 7:
If we divide 2147 by 901, we get 2 and a remainder of 345.
Use 2 as the next digit of our solution. 
Result so far: 1342.0
Subtract 1802 from 2147 to get 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Moving on to step 8:
901 goes into 3450 3 times with a remainder of 747.
The number 3 becomes the next digit in our result. 
Result so far: 1342.3
If we subtract 2703 from 3450, we get 747.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7470, and continue the process.

Advancing to step 9:
If we divide 7470 by 901, we get 8 and a remainder of 262.
The next digit of our result is 8. 
Result so far: 1342.38
Subtract 7208 from 7470 to get 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Step 10:
2620 divided by 901 is 2 with a remainder of 818.
Record the quotient 2 as the next digit in the result. 
Result so far: 1342.382
Subtracting 1802 from 2620 leaves us with 818.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8180, and continue the process.

Let's proceed to step 11:
When dividing 8180 by 901, we get 9 with a remainder of 71.
Use 9 as the next digit of our solution. 
Result so far: 1342.3829
Deduct 8109 from 8180 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 12:
710 divided by 901 is 0 with a remainder of 710.
Put 0 as the next digit of the answer. 
Result so far: 1342.3829
Deduct 0 from 710 and we're left with 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Going ahead to step 13:
The number 901 fits into 7100 7 times, leaving a remainder of 793.
Record the quotient 7 as the next digit in the result. 
Result so far: 1342.382907
The remainder is 793 after subtracting 6307 from 7100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7930, and continue the process.

Let's proceed to step 14:
901 can be fit into 7930 8 times, resulting in a remainder of 722.
Write down 8 as next digit of the result. 
Result so far: 1342.3829078
Subtracting 7208 from 7930 leaves us with 722.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7220, and continue the process.

Moving on to step 15:
901 goes into 7220 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 1342.38290788
Deduct 7208 from 7220 and we're left 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 outcome is 1342.38290788, with a leftover of 1.2e-08.