Answer:
78,125
Step-by-step explanation:
im not sure if this is right but I just did
125x5= 625 (which was the 4th session) then
625x5= 3125 (was the 5th session) then
3125x5= 15265 (6th session) then
15265x 78125
there might be an equation for this but I don't know it so I just did that-