How to jump X bytes down in hexedit?

I am looking through a memory dump B79C6440 64 6F 6E 65 00 00 6C 5F 75 62 6C 65 20 73 68 6F done..l_uble sho B79C6450 77 5F 00 00 5F 6F 6E 5F 72 75 70 00 00 61 63 6B w_.._on_rup..ack B79C6460 69 72 71 5F 76 65 63 74 6F 72 73 10 10 05 30 10 irq_vectors...0. B79C6470 06 50 10 07 70 10 08 90 10 09 B0 10 0A 98 1B FC .P..p........... B79C6480 16 9C 1B A0 A4 A8 18 6E 6D 69 5F 63 68 65 63 6B .......nmi_check using Hexedit I can jump to a new address by pressing enter and typing the address in. Say I want to move from address B79C6440 by adding an offset of X bytes , how could I compute the new address I want to reach so I could type it in?