@Dolfin:
d7777+d777 + d77 + d7 = (4194)+(84) + (41) + (4) = 4323
d7777+d777 + d77 + d7 = (4194)+(84) + (41) + (4) = 4323d7777+d777 + d77 + d7 = (499)+(765) + (50) + (1) = 1315d7777+d777 + d77 + d7 = (796)+(293) + (72) + (1) = 1162d7777+d777 + d77 + d7 = (2025)+(276) + (49) + (3) = 2353d7777+d777 + d77 + d7 = (3306)+(482) + (72) + (3) = 3863d7777+d777 + d77 + d7 = (5118)+(698) + (10) + (4) = 5830d7777+d777 + d77 + d7 = (1528)+(732) + (67) + (6) = 2333d7777+d777 + d77 + d7 = (6151)+(309) + (36) + (2) = 6498d7777+d777 + d77 + d7 = (6102)+(210) + (44) + (6) = 6362d7777+d777 + d77 + d7 = (324)+(248) + (60) + (2) = 634d7777+d777 + d77 + d7 = (5042)+(560) + (38) + (1) = 5641d7777+d777 + d77 + d7 = (4804)+(191) + (46) + (4) = 5045d7777+d777 + d77 + d7 = (5398)+(634) + (55) + (7) = 6094d7777+d777 + d77 + d7 = (267)+(99) + (27) + (2) = 395d7777+d777 + d77 + d7 = (2247)+(73) + (44) + (3) = 2367d7777+d777 + d77 + d7 = (100)+(644) + (54) + (6) = 804d7777+d777 + d77 + d7 = (522)+(668) + (74) + (2) = 1266d7777+d777 + d77 + d7 = (677)+(173) + (65) + (7) = 922d7777+d777 + d77 + d7 = (2480)+(60) + (52) + (6) = 2598d7777+d777 + d77 + d7 = (105)+(382) + (64) + (4) = 555d7777+d777 + d77 + d7 = (506)+(753) + (1) + (3) = 1263d7000!+d700!+d70!+d7! = (1828)+(629)+(69)+(3) = 2529d7777+d777 + d77 + d7 = (3392)+(505) + (38) + (2) = 3937d7777+d777 + d77 + d7 = (2152)+(126) + (60) + (3) = 2341d7777+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) = 4889