find the value of
rn1 81265 x 169 - 81265 x 69
rn2 3845 x 5 x 782 + 769 x 25 x 218
(1) 81265 × 169 – 81265 × 69
= 81265 (169 – 69)
= 81265 × 100
= 8126500
(2) 3845 × 5 × 782 + 769 × 25 × 218
= 19225 × 782 + 19225 × 218
= 19225 (782 + 218)
= 19225 × 1000
= 19225000