40648438 ÷ 388 
We want to figure out the number of times 40648438 can be divided by 388.

Let's proceed to step 1:
388 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 388

Let's proceed to step 2:
If we divide 40 by 388, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Bring next digit (6) of the dividend behind the 40 and repeat the process: 406 / 388

Going ahead to step 3:
388 can be fit into 406 1 times, resulting in a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 388 from 406 and we're left with 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 388

On to step 4:
388 goes into 184 0 times with a remainder of 184.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 184 to get 184.
Fetch the next digit (8) from the dividend, attach it to 184 and continue: 1848 / 388

Going ahead to step 5:
When dividing 1848 by 388, we get 4 with a remainder of 296.
Record the quotient 4 as the next digit in the result. 
Result so far: 104.0
Subtracting 1552 from 1848 leaves us with 296.
Include the next digit (4) from the dividend after 296, then repeat: 2964 / 388

Going ahead to step 6:
When dividing 2964 by 388, we get 7 with a remainder of 248.
Write down 7 as next digit of the result. 
Result so far: 1047.0
Subtracting 2716 from 2964 leaves us with 248.
Grab the next digit (3) from the dividend, add it to 248, then carry on: 2483 / 388

Step 7:
2483 divided by 388 is 6 with a remainder of 155.
Put 6 as the next digit of the answer. 
Result so far: 10476.0
If we subtract 2328 from 2483, we get 155.
Include the next digit (8) from the dividend after 155, then repeat: 1558 / 388

Going ahead to step 8:
1558 divided by 388 is 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 104764.0
Deduct 1552 from 1558 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
388 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 104764.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 10:
388 can be fit into 600 1 times, resulting in a remainder of 212.
Record the quotient 1 as the next digit in the result. 
Result so far: 104764.01
Subtracting 388 from 600 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 11:
388 goes into 2120 5 times with a remainder of 180.
The number 5 becomes the next digit in our result. 
Result so far: 104764.015
Deduct 1940 from 2120 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 12:
The number 388 fits into 1800 4 times, leaving a remainder of 248.
Write down 4 as next digit of the result. 
Result so far: 104764.0154
Subtract 1552 from 1800 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 13:
388 can be fit into 2480 6 times, resulting in a remainder of 152.
The number 6 becomes the next digit in our result. 
Result so far: 104764.01546
The remainder is 152 after subtracting 2328 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 14:
388 can be fit into 1520 3 times, resulting in a remainder of 356.
Use 3 as the next digit of our solution. 
Result so far: 104764.015463
Subtracting 1164 from 1520 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 15:
The number 388 fits into 3560 9 times, leaving a remainder of 68.
Use 9 as the next digit of our solution. 
Result so far: 104764.0154639
Subtracting 3492 from 3560 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 16:
The number 388 fits into 680 1 times, leaving a remainder of 292.
The next digit of our result is 1. 
Result so far: 104764.01546391
If we subtract 388 from 680, we get 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

After the division, we end up with 104764.01546391 and a remainder of 2.92e-07.