[Python] Subtract specific indexed values from lists of list

I have a list like

l1 = [[403, 105], [403, 100], [403, 92], [403, 95], [403, 89]].


I want to subtract 403 from all the 403s and check if the difference is 0.

I again want to check the difference of 105 from 100, 92, 95 and 89 respectively and check the difference. The result I want to obtain is:

diffelement1 = [0,0,0,0]
diffelement2 = [5,13,10,16]


Can someone please help me with this?

Continue reading...