@Dolfin:
d7777+d777 + d77 + d7 = (7728)+(401) + (60) + (1) = 8190
d7777+d777 + d77 + d7 = (7728)+(401) + (60) + (1) = 8190d7000!+d700!+d70!+d7! = (5160)+(524)+(49)+(7+5) = 5745d7777+d777 + d77 + d7 = (1114)+(110) + (32) + (4) = 1260d7777+d777 + d77 + d7 = (3515)+(342) + (5) + (6) = 3868d7777+d777 + d77 + d7 = (4168)+(561) + (68) + (4) = 4801d7777+d777 + d77 + d7 = (751)+(16) + (44) + (7) = 818d7777+d777 + d77 + d7 = (2606)+(722) + (70) + (3) = 3401d7000!+d700!+d70!+d7! = (2319)+(217)+(45)+(2) = 2583d7777+d777 + d77 + d7 = (7206)+(334) + (68) + (3) = 7611d7777+d777 + d77 + d7 = (4465)+(408) + (11) + (5) = 4889d7777+d777 + d77 + d7 = (7663)+(77) + (57) + (6) = 7803d7777+d777 + d77 + d7 = (7776)+(250) + (25) + (2) = 8053d7000!+d700!+d70!+d7! = (2819)+(551)+(45)+(5) = 3420d7777 = (432) = 432d7777 = (3716) = 3716d1488 = (697) = 697d7777 = (7612) = 7612d7777 = (1325) = 1325d7777 = (780) = 780d7000!+d700!+d70!+d7! = (4073)+(423)+(29)+(2) = 4527d7777 = (3789) = 3789d7777+d777 + d77 + d7 = (708)+(552) + (73) + (7) = 1340d7777+d777 + d77 + d7 = (4445)+(496) + (9) + (4) = 4954d7777+d777 + d77 + d7 = (1200)+(75) + (26) + (4) = 1305d7777+d777 + d77 + d7 = (3766)+(57) + (17) + (4) = 3844d7777+d777 + d77 + d7 = (1207)+(102) + (40) + (4) = 1353d7777 = (5956) = 5956d7777 = (3380) = 3380d7777 = (2189) = 2189d7777 = (786) = 7867d7777 = (3929+1639+3324+2404+6260+7736+1312) = 26604d7777 = (654) = 654