78.4 Plus 664 Addition :

Number 1 Number 2 Answer
78.4 664 742.4

How to calculate 78.4 plus 664 ?

Let's break down the addition of 078.4 and 66400 step by step:

   078.4      <-- Start with the rightmost column
+  66400
---------

    Add the digits in the rightmost column:
        4 + 0 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   078.4
+  66400
---------
     4


    Add the digits in the rightmost column:
        8 + 4 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   078.4
+  66400
---------
     2.4


    Add the digits in the rightmost column:
        7 + 6 + 1 = 14
        Write down 4 in the rightmost column, carry over 1 to the next column.

   078.4
+  66400
---------
     42.4


    Add the digits in the rightmost column:
        0 + 6 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   078.4
+  66400
---------
     742.4

    Continue to the left:
        There are no more columns to the left.

The final result is 742.4.
So, 078.4 + 66400 = 742.4

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