In the three pie charts given you will notice that the sum of the left most number of the left pie chart and left most number of the pie chart at the bottom is equal to the left most number of the pie chart on the right. To put it simply:
58+64=122.
The same is the case for the right most number:
32+21=53.
So to find missing number:
?+85=140
?=140-85=55
Press the keypad and enter 55 to exit the level.
