import times, strutils, sequtils, math, algorithm, tables, sets, lists, intsets
import critbits, future, strformat, deques
template `max=`(x,y) = x = max(x,y)
template `min=`(x,y) = x = min(x,y)
template `mod=`(x,y) = x = x mod y
template scan2 = (scan(), scan())
template scan3 = (scan(), scan())
let read* = iterator: string {.closure.} =
    while true: (for s in stdin.readLine.split: yield s)
proc scan(): int = read().parseInt
proc scanf(): float = read().parseFloat
proc toInt(c:char): int =
    return int(c) - int('0')



proc solve()=
  var
    t = scan()
    dab = newseqwith(t,(scan(),scan(),scan()))
  for (d,a,b) in dab:
    if a>0:
      echo b.div(d-1)*((d)*(d-1)).div(2)+((1+b.mod(d-1))*(b.mod(d-1))).div(2) - 
        ((a-1).div(d-1)*((d)*(d-1)).div(2)+((1+(a-1).mod(d-1))*((a-1).mod(d-1))).div(2) )
    else:
      echo b.div(d-1)*((d)*(d-1)).div(2)+((1+b.mod(d-1))*(b.mod(d-1))).div(2) 
solve()