'How are things?' 'Couldn't be better. We're steadily growing revenue and profit.'
Literal
''Condition [topic-は] how?'' ''Best-condition is. Steadily revenue-and-profit-growing [object-を] continuing [emphatic-よ].''
A business/casual exchange with the stock phrase 絶好調 ('best condition, peak form'). 増収増益 ('increased revenue, increased profit') is a standard four-kanji compound in business Japanese — the kind of phrase that appears in annual reports. 着実に ('steadily, reliably') is a common formal adverb. ~続けている is the ~ている form of 続ける, 'to continue doing', marking an ongoing sustained action.