@Dolfin:
d7777+d777 + d77 + d7 = (4690)+(150) + (27) + (7) = 4874
d7777+d777 + d77 + d7 = (4690)+(150) + (27) + (7) = 4874d7777+d777 + d77 + d7 = (1129)+(682) + (58) + (4) = 1873d7777+d777 + d77 + d7 = (4178)+(177) + (1) + (2) = 4358d7777+d777 + d77 + d7 = (1423)+(585) + (10) + (1) = 2019d7777+d777 + d77 + d7 = (6633)+(83) + (43) + (7) = 6766d7777+d777 + d77 + d7 = (6707)+(696) + (50) + (1) = 7454d7777+d777 + d77 + d7 = (314)+(281) + (1) + (2) = 598d7000+d700+d70+d7 = (5034)+(608)+(70)+(4) = 5716d7777+d777 + d77 + d7 = (2983)+(590) + (46) + (7) = 3626d7777+d777 + d77 + d7 = (7527)+(640) + (15) + (6) = 8188d7000+d700+d70+d7 = (1281)+(617)+(48)+(6) = 1952d7777+d777 + d77 + d7 = (6417)+(168) + (27) + (2) = 6614d7000+d700+d70+d7 = (6966)+(320)+(48)+(3) = 7337d7777+d777 + d77 + d7 = (4001)+(431) + (31) + (4) = 4467d7000+d700+d70+d7 = (5499)+(146)+(1)+(2) = 5648d7777+d777 + d77 + d7 = (4630)+(107) + (1) + (3) = 4741d7000+d700+d70+d7 = (866)+(111)+(50)+(3) = 1030d7000+d700+d70+d7 = (4425)+(555)+(40)+(7) = 5027d7777+d777 + d77 + d7 = (5669)+(371) + (8) + (6) = 6054d7000+d700+d70+d7 = (6286)+(230)+(54)+(5) = 6575d7000+d700+d70+d7 = (102)+(545)+(67)+(2) = 716d7000+d700+d70+d7 = (2311)+(5)+(35)+(2) = 2353d7000+d700+d70+d7 = (5359)+(598)+(48)+(7) = 6012d7000+d700+d70+d7 = (676)+(127)+(44)+(5) = 852d20! = (6) = 6d6! = (4) = 4d4! = (3) = 3d3! = (1) = 1d9 = (2) = 2d7777+d777 + d77 + d7 = (5393)+(521) + (26) + (2) = 5942d7777+d777 + d77 + d7 = (6180)+(692) + (59) + (3) = 6934d7777+d777 + d77 + d7 = (3691)+(411) + (18) + (6) = 4126d7777+d777 + d77 + d7 = (4885)+(455) + (40) + (4) = 5384d7777+d777 + d77 + d7 = (2219)+(692) + (70) + (5) = 2986d7777+d777 + d77 + d7 = (2735)+(616) + (3) + (4) = 3358d7777+d777 + d77 + d7 = (5516)+(206) + (74) + (7) = 5803d7777+d777 + d77 + d7 = (4773)+(564) + (60) + (1) = 5398d7777+d777 + d77 + d7 = (6958)+(244) + (76) + (1) = 7279