TypeError: can't multiply sequence by non-int of type 'str'

[Beatenberg]

What about with float? The full error is:

Error:
Traceback (most recent call last):
  File "F:\Computing\Term 3\Aussie Pass.py", line 67, in <module>
    Pass_Show()
  File "F:\Computing\Term 3\Aussie Pass.py", line 6, in Pass_Show
    Pass_Package()
  File "F:\Computing\Term 3\Aussie Pass.py", line 12, in Pass_Package
    Pass_Discount()
  File "F:\Computing\Term 3\Aussie Pass.py", line 18, in Pass_Discount
    Pass_Cost()
  File "F:\Computing\Term 3\Aussie Pass.py", line 33, in Pass_Cost
    Pass_Cost()#If they do not enter any of those values they will be prompted to ask again
  File "F:\Computing\Term 3\Aussie Pass.py", line 43, in Pass_Cost
    Pass_Calculate(cost)
  File "F:\Computing\Term 3\Aussie Pass.py", line 61, in Pass_Calculate
    return cost[0] *cost[1] #Calculates the cost from their chosen package and discount e.g. 7 * 0.6
TypeError: can't multiply sequence by non-int of type 'float'