Among single digits, those that are a multiple of three are 0, 3, 6, 9.

The number they are a multiple of is 0, 1, 2, 3.

Two less than that number gives -2, -1, 0, 1.

Solutions to your problem statement include

The number they are a multiple of is 0, 1, 2, 3.

Two less than that number gives -2, -1, 0, 1.

Solutions to your problem statement include

**620,000****931,000**