16643953 ÷ 187 
We want to figure out the number of times 16643953 can be divided by 187.

On to step 1:
187 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 187

Let's proceed to step 2:
When dividing 16 by 187, we get 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Append the next digit (6) from the dividend to 16 and continue with: 166 / 187

Advancing to step 3:
187 can be fit into 166 0 times, resulting in a remainder of 166.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 166, we get 166.
Append the next digit (4) from the dividend to 166 and continue with: 1664 / 187

Moving on to step 4:
If we divide 1664 by 187, we get 8 and a remainder of 168.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 1496 from 1664 and we're left with 168.
Grab the next digit (3) from the dividend, add it to 168, then carry on: 1683 / 187

Let's proceed to step 5:
When dividing 1683 by 187, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 89.0
Deduct 1683 from 1683 and we're left with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 187

Moving on to step 6:
187 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 890.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (5) from the dividend, add it to 9, then carry on: 95 / 187

On to step 7:
When dividing 95 by 187, we get 0 with a remainder of 95.
Put 0 as the next digit of the answer. 
Result so far: 8900.0
If we subtract 0 from 95, we get 95.
Append the next digit (3) from the dividend to 95 and continue with: 953 / 187

Moving on to step 8:
953 divided by 187 is 5 with a remainder of 18.
Put 5 as the next digit of the answer. 
Result so far: 89005.0
Deduct 935 from 953 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
187 can be fit into 180 0 times, resulting in a remainder of 180.
Use 0 as the next digit of our solution. 
Result so far: 89005.0
Deduct 0 from 180 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 10:
When dividing 1800 by 187, we get 9 with a remainder of 117.
Record the quotient 9 as the next digit in the result. 
Result so far: 89005.09
Deduct 1683 from 1800 and we're left with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

On to step 11:
The number 187 fits into 1170 6 times, leaving a remainder of 48.
The next digit of our result is 6. 
Result so far: 89005.096
Deduct 1122 from 1170 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 12:
187 can be fit into 480 2 times, resulting in a remainder of 106.
Record the quotient 2 as the next digit in the result. 
Result so far: 89005.0962
If we take 374 away from 480, we end up with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 13:
187 goes into 1060 5 times with a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 89005.09625
If we subtract 935 from 1060, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 14:
The number 187 fits into 1250 6 times, leaving a remainder of 128.
Use 6 as the next digit of our solution. 
Result so far: 89005.096256
Subtract 1122 from 1250 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 15:
When dividing 1280 by 187, we get 6 with a remainder of 158.
Put 6 as the next digit of the answer. 
Result so far: 89005.0962566
Subtracting 1122 from 1280 leaves us with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

The quotient of the division is 89005.0962566, and the remainder is 1.58e-06.