We're dividing 73186523 by 450 
Let's see how many times 450 fits into 73186523.

Step 1:
450 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 450

Let's proceed to step 2:
450 goes into 73 0 times with a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 73 and we're left with 73.
Grab the next digit (1) from the dividend, add it to 73, then carry on: 731 / 450

Advancing to step 3:
The number 450 fits into 731 1 times, leaving a remainder of 281.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 450 from 731 and we're left with 281.
Take the next digit (8) from the dividend and append it to 281, then repeat: 2818 / 450

Let's proceed to step 4:
If we divide 2818 by 450, we get 6 and a remainder of 118.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we subtract 2700 from 2818, we get 118.
Include the next digit (6) from the dividend after 118, then repeat: 1186 / 450

On to step 5:
450 can be fit into 1186 2 times, resulting in a remainder of 286.
Write down 2 as next digit of the result. 
Result so far: 162.0
Subtract 900 from 1186 to get 286.
Include the next digit (5) from the dividend after 286, then repeat: 2865 / 450

Advancing to step 6:
The number 450 fits into 2865 6 times, leaving a remainder of 165.
Use 6 as the next digit of our solution. 
Result so far: 1626.0
Deduct 2700 from 2865 and we're left with 165.
Bring next digit (2) of the dividend behind the 165 and repeat the process: 1652 / 450

Moving on to step 7:
The number 450 fits into 1652 3 times, leaving a remainder of 302.
Put 3 as the next digit of the answer. 
Result so far: 16263.0
The remainder is 302 after subtracting 1350 from 1652.
Take the next digit (3) from the dividend and append it to 302, then repeat: 3023 / 450

Moving on to step 8:
When dividing 3023 by 450, we get 6 with a remainder of 323.
The number 6 becomes the next digit in our result. 
Result so far: 162636.0
The remainder is 323 after subtracting 2700 from 3023.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Let's proceed to step 9:
450 goes into 3230 7 times with a remainder of 80.
The number 7 becomes the next digit in our result. 
Result so far: 162636.7
Subtracting 3150 from 3230 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 10:
When dividing 800 by 450, we get 1 with a remainder of 350.
Put 1 as the next digit of the answer. 
Result so far: 162636.71
If we take 450 away from 800, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 11:
450 goes into 3500 7 times with a remainder of 350.
Write down 7 as next digit of the result. 
Result so far: 162636.717
If we take 3150 away from 3500, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 12:
3500 divided by 450 is 7 with a remainder of 350.
Record the quotient 7 as the next digit in the result. 
Result so far: 162636.7177
Deduct 3150 from 3500 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

The final outcome is 162636.7177, with a leftover of 0.0035.