73189156 ÷ 64 
We want to figure out the number of times 73189156 can be divided by 64.

Advancing to step 1:
The number 64 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 64

Moving on to step 2:
When dividing 73 by 64, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 9 after subtracting 64 from 73.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 64

Moving on to step 3:
64 can be fit into 91 1 times, resulting in a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we subtract 64 from 91, we get 27.
Take the next digit (8) from the dividend and append it to 27, then repeat: 278 / 64

Moving on to step 4:
278 divided by 64 is 4 with a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 114.0
Subtracting 256 from 278 leaves us with 22.
Take the next digit (9) from the dividend and append it to 22, then repeat: 229 / 64

On to step 5:
229 divided by 64 is 3 with a remainder of 37.
The next digit of our result is 3. 
Result so far: 1143.0
If we take 192 away from 229, we end up with 37.
Append the next digit (1) from the dividend to 37 and continue with: 371 / 64

Going ahead to step 6:
When dividing 371 by 64, we get 5 with a remainder of 51.
The next digit of our result is 5. 
Result so far: 11435.0
Deduct 320 from 371 and we're left with 51.
Bring next digit (5) of the dividend behind the 51 and repeat the process: 515 / 64

Advancing to step 7:
If we divide 515 by 64, we get 8 and a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 114358.0
Subtracting 512 from 515 leaves us with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 64

Moving on to step 8:
The number 64 fits into 36 0 times, leaving a remainder of 36.
The next digit of our result is 0. 
Result so far: 1143580.0
Deduct 0 from 36 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
When dividing 360 by 64, we get 5 with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 1143580.5
Subtract 320 from 360 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
64 goes into 400 6 times with a remainder of 16.
The next digit of our result is 6. 
Result so far: 1143580.56
If we take 384 away from 400, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
If we divide 160 by 64, we get 2 and a remainder of 32.
The next digit of our result is 2. 
Result so far: 1143580.562
The remainder is 32 after subtracting 128 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
If we divide 320 by 64, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 1143580.5625
If we take 320 away from 320, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 13:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1143580.5625
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 14:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1143580.5625
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 1143580.5625, with a leftover of 0.0.