What are ABB times C = DBBC and ABCD?

What are ABB times C = DBBC and ABCD?

If a number C is multiplied by a different number B or C, then (B, c) can only be:
B=1,C=2;B=6,C=2
B=1,C=4;B=6,C=4
B=1,C=6;
B=1,C=8;B=6,C=8
B=1,3,7,9,C=5
The last two of BB * C are BC
Therefore, it can only be:
B = 6, C = 4; BB * C = 66 * 4 = 264; it shows that a * C bit is 4; but a and B are different. There is no solution
B = 9, C = 5; BB * C = 99 * 5 = 495; it shows that a * C bit is 5; a = 3,7, then the corresponding d = 1,3
So: 399 * 5 = 1995 or 799 * 5 = 3995