53448413 ÷ 861 
We want to figure out the number of times 53448413 can be divided by 861.

Let's proceed to step 1:
861 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 861

On to step 2:
861 goes into 53 0 times with a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Fetch the next digit (4) from the dividend, attach it to 53 and continue: 534 / 861

Step 3:
534 divided by 861 is 0 with a remainder of 534.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 534, we get 534.
Append the next digit (4) from the dividend to 534 and continue with: 5344 / 861

Step 4:
861 can be fit into 5344 6 times, resulting in a remainder of 178.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 5166 from 5344 to get 178.
Bring next digit (8) of the dividend behind the 178 and repeat the process: 1788 / 861

On to step 5:
When dividing 1788 by 861, we get 2 with a remainder of 66.
Use 2 as the next digit of our solution. 
Result so far: 62.0
If we subtract 1722 from 1788, we get 66.
Fetch the next digit (4) from the dividend, attach it to 66 and continue: 664 / 861

Let's proceed to step 6:
If we divide 664 by 861, we get 0 and a remainder of 664.
Record the quotient 0 as the next digit in the result. 
Result so far: 620.0
The remainder is 664 after subtracting 0 from 664.
Grab the next digit (1) from the dividend, add it to 664, then carry on: 6641 / 861

Moving on to step 7:
When dividing 6641 by 861, we get 7 with a remainder of 614.
Put 7 as the next digit of the answer. 
Result so far: 6207.0
If we subtract 6027 from 6641, we get 614.
Append the next digit (3) from the dividend to 614 and continue with: 6143 / 861

Going ahead to step 8:
6143 divided by 861 is 7 with a remainder of 116.
Use 7 as the next digit of our solution. 
Result so far: 62077.0
Deduct 6027 from 6143 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 9:
861 can be fit into 1160 1 times, resulting in a remainder of 299.
Record the quotient 1 as the next digit in the result. 
Result so far: 62077.1
Subtracting 861 from 1160 leaves us with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Moving on to step 10:
861 goes into 2990 3 times with a remainder of 407.
Write down 3 as next digit of the result. 
Result so far: 62077.13
Subtract 2583 from 2990 to get 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Going ahead to step 11:
861 goes into 4070 4 times with a remainder of 626.
The next digit of our result is 4. 
Result so far: 62077.134
Subtract 3444 from 4070 to get 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

Let's proceed to step 12:
861 can be fit into 6260 7 times, resulting in a remainder of 233.
The number 7 becomes the next digit in our result. 
Result so far: 62077.1347
If we take 6027 away from 6260, we end up with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Step 13:
If we divide 2330 by 861, we get 2 and a remainder of 608.
The number 2 becomes the next digit in our result. 
Result so far: 62077.13472
Subtract 1722 from 2330 to get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Advancing to step 14:
861 goes into 6080 7 times with a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 62077.134727
Deduct 6027 from 6080 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 15:
If we divide 530 by 861, we get 0 and a remainder of 530.
The number 0 becomes the next digit in our result. 
Result so far: 62077.134727
The remainder is 530 after subtracting 0 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Advancing to step 16:
5300 divided by 861 is 6 with a remainder of 134.
Use 6 as the next digit of our solution. 
Result so far: 62077.13472706
The remainder is 134 after subtracting 5166 from 5300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

After the division, we end up with 62077.13472706 and a remainder of 1.34e-07.