if statement in microsoft excel

this is my statement

=IF(G7 < 6, G7 * D22) + IF(5 < G7 < 11, G7 * D23) + IF(10 < G7, G7 * D24)

it works if G7 cell value is less then 6 or greater then 10, but if G7 value is from 6 to 10 the result is 0. Cell D23 has value of 15.

What can be wrong?

Thank you