This is the 2392nd most frequent Russian word.
остальное
"The rest" or "the remaining."
Here, 'остальное' refers to 'the other items or tasks' not specified, indicating separation or postponement.
Я купил продукты, а остальное оставлю на потом.
I bought groceries, and will leave the rest for later.
In this case, 'остальное' signifies 'the remaining information' which is deemed irrelevant.
Из всей информации остальное не имеет значения.
Of all the information, the rest is not relevant.
Here, 'остальное' implies 'the other items in this store,' differentiating them based on price compared to other items.