`( x + 1233 ) - 1978 = 986352`
`x + 1233 = 986352 + 1978 `
`x + 1233 = 988330`
`x = 988330 - 1233`
`x = 987097`
`x - 23345 = 1886`
`x = 1886 + 23345`
`x = 25231`
`y × 123 = 44772`
`y = 44772 : 123`
`y = 364`
`x : 2 : 3 = 138`
`x = 138 × 2 × 3`
`x = 828`