75340445 ÷ 646 
We want to divide 75340445 by 646.

Advancing to step 1:
646 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 646

Let's proceed to step 2:
If we divide 75 by 646, we get 0 and a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 646

Going ahead to step 3:
If we divide 753 by 646, we get 1 and a remainder of 107.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 646 from 753 and we're left with 107.
Fetch the next digit (4) from the dividend, attach it to 107 and continue: 1074 / 646

Let's proceed to step 4:
646 goes into 1074 1 times with a remainder of 428.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 646 from 1074 and we're left with 428.
Bring next digit (0) of the dividend behind the 428 and repeat the process: 4280 / 646

Step 5:
646 can be fit into 4280 6 times, resulting in a remainder of 404.
Record the quotient 6 as the next digit in the result. 
Result so far: 116.0
If we take 3876 away from 4280, we end up with 404.
Fetch the next digit (4) from the dividend, attach it to 404 and continue: 4044 / 646

Let's proceed to step 6:
646 goes into 4044 6 times with a remainder of 168.
The next digit of our result is 6. 
Result so far: 1166.0
Subtract 3876 from 4044 to get 168.
Grab the next digit (4) from the dividend, add it to 168, then carry on: 1684 / 646

Going ahead to step 7:
1684 divided by 646 is 2 with a remainder of 392.
Use 2 as the next digit of our solution. 
Result so far: 11662.0
If we take 1292 away from 1684, we end up with 392.
Grab the next digit (5) from the dividend, add it to 392, then carry on: 3925 / 646

On to step 8:
The number 646 fits into 3925 6 times, leaving a remainder of 49.
Write down 6 as next digit of the result. 
Result so far: 116626.0
If we subtract 3876 from 3925, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 9:
If we divide 490 by 646, we get 0 and a remainder of 490.
Use 0 as the next digit of our solution. 
Result so far: 116626.0
If we subtract 0 from 490, we get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Let's proceed to step 10:
646 can be fit into 4900 7 times, resulting in a remainder of 378.
The number 7 becomes the next digit in our result. 
Result so far: 116626.07
If we subtract 4522 from 4900, we get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Moving on to step 11:
When dividing 3780 by 646, we get 5 with a remainder of 550.
The next digit of our result is 5. 
Result so far: 116626.075
If we subtract 3230 from 3780, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Advancing to step 12:
646 goes into 5500 8 times with a remainder of 332.
Write down 8 as next digit of the result. 
Result so far: 116626.0758
Deduct 5168 from 5500 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Moving on to step 13:
646 goes into 3320 5 times with a remainder of 90.
Put 5 as the next digit of the answer. 
Result so far: 116626.07585
Subtracting 3230 from 3320 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 14:
646 goes into 900 1 times with a remainder of 254.
The next digit of our result is 1. 
Result so far: 116626.075851
If we subtract 646 from 900, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 15:
When dividing 2540 by 646, we get 3 with a remainder of 602.
Use 3 as the next digit of our solution. 
Result so far: 116626.0758513
Subtracting 1938 from 2540 leaves us with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Let's proceed to step 16:
The number 646 fits into 6020 9 times, leaving a remainder of 206.
Record the quotient 9 as the next digit in the result. 
Result so far: 116626.07585139
Subtract 5814 from 6020 to get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

The quotient of the division is 116626.07585139, and the remainder is 2.06e-07.