16640225 ÷ 345 
We're looking to find how many times 345 goes into 16640225.

Let's proceed to step 1:
If we divide 1 by 345, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 345

Advancing to step 2:
The number 345 fits into 16 0 times, leaving a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Append the next digit (6) from the dividend to 16 and continue with: 166 / 345

Step 3:
The number 345 fits into 166 0 times, leaving a remainder of 166.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 166, we get 166.
Include the next digit (4) from the dividend after 166, then repeat: 1664 / 345

Advancing to step 4:
345 goes into 1664 4 times with a remainder of 284.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 1380 from 1664 and we're left with 284.
Include the next digit (0) from the dividend after 284, then repeat: 2840 / 345

Let's proceed to step 5:
When dividing 2840 by 345, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
The remainder is 80 after subtracting 2760 from 2840.
Bring next digit (2) of the dividend behind the 80 and repeat the process: 802 / 345

Step 6:
345 goes into 802 2 times with a remainder of 112.
Use 2 as the next digit of our solution. 
Result so far: 482.0
If we take 690 away from 802, we end up with 112.
Fetch the next digit (2) from the dividend, attach it to 112 and continue: 1122 / 345

Moving on to step 7:
When dividing 1122 by 345, we get 3 with a remainder of 87.
The number 3 becomes the next digit in our result. 
Result so far: 4823.0
If we take 1035 away from 1122, we end up with 87.
Include the next digit (5) from the dividend after 87, then repeat: 875 / 345

On to step 8:
When dividing 875 by 345, we get 2 with a remainder of 185.
Record the quotient 2 as the next digit in the result. 
Result so far: 48232.0
Subtracting 690 from 875 leaves us with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Step 9:
345 can be fit into 1850 5 times, resulting in a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 48232.5
If we take 1725 away from 1850, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 10:
345 can be fit into 1250 3 times, resulting in a remainder of 215.
Use 3 as the next digit of our solution. 
Result so far: 48232.53
Subtracting 1035 from 1250 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 11:
345 can be fit into 2150 6 times, resulting in a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 48232.536
If we subtract 2070 from 2150, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 12:
The number 345 fits into 800 2 times, leaving a remainder of 110.
Use 2 as the next digit of our solution. 
Result so far: 48232.5362
Deduct 690 from 800 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 13:
The number 345 fits into 1100 3 times, leaving a remainder of 65.
Write down 3 as next digit of the result. 
Result so far: 48232.53623
Deduct 1035 from 1100 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 14:
650 divided by 345 is 1 with a remainder of 305.
The next digit of our result is 1. 
Result so far: 48232.536231
Subtracting 345 from 650 leaves us with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Going ahead to step 15:
3050 divided by 345 is 8 with a remainder of 290.
Record the quotient 8 as the next digit in the result. 
Result so far: 48232.5362318
If we take 2760 away from 3050, we end up with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 16:
2900 divided by 345 is 8 with a remainder of 140.
Write down 8 as next digit of the result. 
Result so far: 48232.53623188
Subtracting 2760 from 2900 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

The final result is 48232.53623188 with a remainder of 1.4e-07.