Image upload limit in Drupal 7

I am creating a photo gallery site.  We want to allow 50 to 100 images upload per node. This can be done in DRUPAL 8 but how can we do this in DRUPAL 7 as we do not wish to allow unlimited.

I am not a drupal expert or coder, hence a easier option will help

Regards

Shankar

Drupal version: 


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