73661903 divided by 57 
We want to figure out the number of times 73661903 can be divided by 57.

On to step 1:
7 divided by 57 is 0 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.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 57

Step 2:
57 can be fit into 73 1 times, resulting in a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 57 from 73 and we're left with 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 57

Moving on to step 3:
If we divide 166 by 57, we get 2 and a remainder of 52.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 114 from 166 leaves us with 52.
Fetch the next digit (6) from the dividend, attach it to 52 and continue: 526 / 57

Step 4:
If we divide 526 by 57, we get 9 and a remainder of 13.
The next digit of our result is 9. 
Result so far: 129.0
If we subtract 513 from 526, we get 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 57

Step 5:
131 divided by 57 is 2 with a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 1292.0
Subtracting 114 from 131 leaves us with 17.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 57

Step 6:
57 goes into 179 3 times with a remainder of 8.
The next digit of our result is 3. 
Result so far: 12923.0
If we subtract 171 from 179, we get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 57

On to step 7:
If we divide 80 by 57, we get 1 and a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 129231.0
Subtracting 57 from 80 leaves us with 23.
Bring next digit (3) of the dividend behind the 23 and repeat the process: 233 / 57

Advancing to step 8:
When dividing 233 by 57, we get 4 with a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 1292314.0
Subtract 228 from 233 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
50 divided by 57 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 1292314.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
When dividing 500 by 57, we get 8 with a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 1292314.08
Subtracting 456 from 500 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 11:
The number 57 fits into 440 7 times, leaving a remainder of 41.
Record the quotient 7 as the next digit in the result. 
Result so far: 1292314.087
Deduct 399 from 440 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 12:
When dividing 410 by 57, we get 7 with a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 1292314.0877
Subtracting 399 from 410 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final outcome is 1292314.0877, with a leftover of 0.00011.