There is a lot of confusion in the units you have used
V - VA -A are not the same thing
Review your question and correct it with the exact data
By dividing the primary voltage over the secondary voltage, you will only get the transformation ratio, not the power but there are doubts since if what you put are "220V" is primary voltage, instead if they are "220 VA" it would be the power of the transformer
It is 38.5V (Volt), 220VA (Volt-Ampere). The formula that doubted the current is whether I = 220VA / 38.5V or I = 220VA / 77V is calculated. But it is already clear to me that it is 220/77 which is the power of the label on the voltage between the ends of the secondary (secondary with 38.5V dual or 77V end to end). Thank you