Răspuns :
7230 : 30 × 7 - 27 × 30 + 123 =
241 × 7 - 27 × 30 + 123 =
1687 - 27 × 30 + 123 =
1687 - 810 + 123 =
877 + 123 =
= 1000
241 × 7 - 27 × 30 + 123 =
1687 - 27 × 30 + 123 =
1687 - 810 + 123 =
877 + 123 =
= 1000