73189639 ÷ 978 
Let's see how many times 978 fits into 73189639.

Moving on to step 1:
When dividing 7 by 978, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 978

Step 2:
When dividing 73 by 978, we get 0 with a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 73, we end up with 73.
Bring next digit (1) of the dividend behind the 73 and repeat the process: 731 / 978

Advancing to step 3:
If we divide 731 by 978, we get 0 and a remainder of 731.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 731, we get 731.
Fetch the next digit (8) from the dividend, attach it to 731 and continue: 7318 / 978

On to step 4:
The number 978 fits into 7318 7 times, leaving a remainder of 472.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 6846 from 7318 leaves us with 472.
Bring next digit (9) of the dividend behind the 472 and repeat the process: 4729 / 978

Moving on to step 5:
978 can be fit into 4729 4 times, resulting in a remainder of 817.
Put 4 as the next digit of the answer. 
Result so far: 74.0
If we take 3912 away from 4729, we end up with 817.
Take the next digit (6) from the dividend and append it to 817, then repeat: 8176 / 978

Step 6:
978 can be fit into 8176 8 times, resulting in a remainder of 352.
The next digit of our result is 8. 
Result so far: 748.0
Deduct 7824 from 8176 and we're left with 352.
Fetch the next digit (3) from the dividend, attach it to 352 and continue: 3523 / 978

Advancing to step 7:
978 goes into 3523 3 times with a remainder of 589.
Write down 3 as next digit of the result. 
Result so far: 7483.0
Subtract 2934 from 3523 to get 589.
Take the next digit (9) from the dividend and append it to 589, then repeat: 5899 / 978

Step 8:
5899 divided by 978 is 6 with a remainder of 31.
The next digit of our result is 6. 
Result so far: 74836.0
The remainder is 31 after subtracting 5868 from 5899.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 9:
310 divided by 978 is 0 with a remainder of 310.
Record the quotient 0 as the next digit in the result. 
Result so far: 74836.0
Subtracting 0 from 310 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Step 10:
The number 978 fits into 3100 3 times, leaving a remainder of 166.
The next digit of our result is 3. 
Result so far: 74836.03
The remainder is 166 after subtracting 2934 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 11:
1660 divided by 978 is 1 with a remainder of 682.
Put 1 as the next digit of the answer. 
Result so far: 74836.031
Subtracting 978 from 1660 leaves us with 682.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6820, and continue the process.

On to step 12:
When dividing 6820 by 978, we get 6 with a remainder of 952.
The next digit of our result is 6. 
Result so far: 74836.0316
If we take 5868 away from 6820, we end up with 952.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9520, and continue the process.

Step 13:
If we divide 9520 by 978, we get 9 and a remainder of 718.
The number 9 becomes the next digit in our result. 
Result so far: 74836.03169
The remainder is 718 after subtracting 8802 from 9520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

Advancing to step 14:
978 goes into 7180 7 times with a remainder of 334.
Record the quotient 7 as the next digit in the result. 
Result so far: 74836.031697
The remainder is 334 after subtracting 6846 from 7180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Step 15:
978 goes into 3340 3 times with a remainder of 406.
Use 3 as the next digit of our solution. 
Result so far: 74836.0316973
If we take 2934 away from 3340, we end up with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Step 16:
If we divide 4060 by 978, we get 4 and a remainder of 148.
Use 4 as the next digit of our solution. 
Result so far: 74836.03169734
Subtracting 3912 from 4060 leaves us with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

In conclusion, the division gives 74836.03169734 with a balance of 1.48e-07.