We look at the division of 73774986 by 509 
We want to divide 73774986 by 509.

Step 1:
509 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 509

Going ahead to step 2:
If we divide 73 by 509, we get 0 and a remainder of 73.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 73, we get 73.
Bring next digit (7) of the dividend behind the 73 and repeat the process: 737 / 509

Advancing to step 3:
737 divided by 509 is 1 with a remainder of 228.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 509 away from 737, we end up with 228.
Append the next digit (7) from the dividend to 228 and continue with: 2287 / 509

Advancing to step 4:
If we divide 2287 by 509, we get 4 and a remainder of 251.
Write down 4 as next digit of the result. 
Result so far: 14.0
The remainder is 251 after subtracting 2036 from 2287.
Include the next digit (4) from the dividend after 251, then repeat: 2514 / 509

Advancing to step 5:
The number 509 fits into 2514 4 times, leaving a remainder of 478.
The number 4 becomes the next digit in our result. 
Result so far: 144.0
If we take 2036 away from 2514, we end up with 478.
Grab the next digit (9) from the dividend, add it to 478, then carry on: 4789 / 509

Moving on to step 6:
509 goes into 4789 9 times with a remainder of 208.
Use 9 as the next digit of our solution. 
Result so far: 1449.0
Subtracting 4581 from 4789 leaves us with 208.
Bring next digit (8) of the dividend behind the 208 and repeat the process: 2088 / 509

On to step 7:
509 goes into 2088 4 times with a remainder of 52.
Put 4 as the next digit of the answer. 
Result so far: 14494.0
Subtract 2036 from 2088 to get 52.
Grab the next digit (6) from the dividend, add it to 52, then carry on: 526 / 509

Let's proceed to step 8:
509 goes into 526 1 times with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 144941.0
Subtracting 509 from 526 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 9:
170 divided by 509 is 0 with a remainder of 170.
Put 0 as the next digit of the answer. 
Result so far: 144941.0
Subtracting 0 from 170 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 10:
509 goes into 1700 3 times with a remainder of 173.
Put 3 as the next digit of the answer. 
Result so far: 144941.03
Deduct 1527 from 1700 and we're left with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

On to step 11:
509 goes into 1730 3 times with a remainder of 203.
Record the quotient 3 as the next digit in the result. 
Result so far: 144941.033
Deduct 1527 from 1730 and we're left with 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Our division results in 144941.033 with a remaining 0.0203.