Step 1: Since 5 do not have a decimal point, we will add one at the end of the number 5.

5.

Step 2: The exponent for 10 is 7. Since the exponent is positive, we must move the decimal point of a number 5. 7 places to the right.

5. → 5.-------.

Step 3: Now we just need to replace empty spaces (dashes) with zeros and to delete old decimal point (the black one) to get:

50000000