Just look at the stats for 2019 elections [1] (copying few of them):
1.035 million: The total number of polling booths across India.
2: The maximum distance in kilometres from any given voter’s house to he nearest polling booth
3.96 million: Number of electronic voting machines (EVMs) in use this election
1.7 million: Paper trail or voter-verifiable paper audit trail machines. It is a documentary record of the voter having exercised his franchise
11 million: Election personnel being deployed to conduct polls
15,256: Height of the world’s highest polling station, in Tashigang, Himachal Pradesh, in feet
35: Kilometres an election team travels just so the only resident of the remote Gir National Forest in Gujarat, where Asiatic lions outnumber humans, can vote. The temple priest gets his own polling station, complete with an EVM
[1] https://qz.com/india/1591214/indian-election-2019s-voters-po...