When calculating a two digit multiplication, Xiaoqin regards "7" on one digit of a factor as "1", and the result is 3726; Xiaolin regards "8" on ten digits of the same factor as "5", and the result is 2622, and the correct product should be______ .

When calculating a two digit multiplication, Xiaoqin regards "7" on one digit of a factor as "1", and the result is 3726; Xiaolin regards "8" on ten digits of the same factor as "5", and the result is 2622, and the correct product should be______ .

(3726-2622) / (81-57) = 1104 / 24 = 46, 87 × 46 = 4002. A: the correct product should be 4002