I don't know how but it finnaly got to the point where it all works perfect.

Thanks for all your help

```
num=1
number_lst=[]
with open("C:\\write_it.txt", "r") as totals:
for line in totals:
print('% 04d %s' %(num, line),end = '')
line=line.strip().split('$')
number_lst.append(float(line[1]))
print(number_lst, '\n')
lst=(sum(number_lst))
num=num+1
Label(aApp,text="Total purchases are:$%.2s\n" % lst, fg = 'red',font=('times', 10, 'bold')).grid(row=0,column=1)
```