66904546 ÷ 486 
Our goal is to divide 66904546 by 486.

Step 1:
When dividing 6 by 486, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 486

Advancing to step 2:
486 can be fit into 66 0 times, resulting in a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Take the next digit (9) from the dividend and append it to 66, then repeat: 669 / 486

Let's proceed to step 3:
When dividing 669 by 486, we get 1 with a remainder of 183.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 486 from 669 and we're left with 183.
Grab the next digit (0) from the dividend, add it to 183, then carry on: 1830 / 486

On to step 4:
When dividing 1830 by 486, we get 3 with a remainder of 372.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 1458 away from 1830, we end up with 372.
Take the next digit (4) from the dividend and append it to 372, then repeat: 3724 / 486

Advancing to step 5:
3724 divided by 486 is 7 with a remainder of 322.
Use 7 as the next digit of our solution. 
Result so far: 137.0
If we subtract 3402 from 3724, we get 322.
Append the next digit (5) from the dividend to 322 and continue with: 3225 / 486

Advancing to step 6:
When dividing 3225 by 486, we get 6 with a remainder of 309.
The next digit of our result is 6. 
Result so far: 1376.0
Subtract 2916 from 3225 to get 309.
Include the next digit (4) from the dividend after 309, then repeat: 3094 / 486

Advancing to step 7:
486 goes into 3094 6 times with a remainder of 178.
The next digit of our result is 6. 
Result so far: 13766.0
Subtracting 2916 from 3094 leaves us with 178.
Append the next digit (6) from the dividend to 178 and continue with: 1786 / 486

Going ahead to step 8:
The number 486 fits into 1786 3 times, leaving a remainder of 328.
Write down 3 as next digit of the result. 
Result so far: 137663.0
Deduct 1458 from 1786 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Let's proceed to step 9:
If we divide 3280 by 486, we get 6 and a remainder of 364.
The next digit of our result is 6. 
Result so far: 137663.6
The remainder is 364 after subtracting 2916 from 3280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Advancing to step 10:
3640 divided by 486 is 7 with a remainder of 238.
The next digit of our result is 7. 
Result so far: 137663.67
Subtract 3402 from 3640 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Let's proceed to step 11:
486 can be fit into 2380 4 times, resulting in a remainder of 436.
Write down 4 as next digit of the result. 
Result so far: 137663.674
Subtract 1944 from 2380 to get 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

On to step 12:
486 can be fit into 4360 8 times, resulting in a remainder of 472.
The number 8 becomes the next digit in our result. 
Result so far: 137663.6748
If we subtract 3888 from 4360, we get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

Step 13:
If we divide 4720 by 486, we get 9 and a remainder of 346.
Put 9 as the next digit of the answer. 
Result so far: 137663.67489
If we take 4374 away from 4720, we end up with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Let's proceed to step 14:
486 can be fit into 3460 7 times, resulting in a remainder of 58.
The next digit of our result is 7. 
Result so far: 137663.674897
The remainder is 58 after subtracting 3402 from 3460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 15:
486 goes into 580 1 times with a remainder of 94.
The next digit of our result is 1. 
Result so far: 137663.6748971
Deduct 486 from 580 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 16:
When dividing 940 by 486, we get 1 with a remainder of 454.
Use 1 as the next digit of our solution. 
Result so far: 137663.67489711
Deduct 486 from 940 and we're left with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Our division results in 137663.67489711 with a remaining 4.54e-07.