Examples of Double bets, where k — is the odds given in the betting line, C — bet stake, S — winning amount. This relates only to events with Asian handicap/total in the Accumulator, and not the general accumulator odds.
Examples for double bets in every situation are shown below: 

1 variant. (W/W) Two halves of a bet is won by a player. In that situation the winning amount (S) equals S=k*C. Accumulator is settled with K=k odds: 

1) Bet stake is 1000 tenge. 
Kew J. - Wang K. Finished with the score 2:1 (6:4, 4:6, 6:2)

First event: Win. Odds are 5
Asian Handicap/total. «Team 1 — Team 2» (1/2 won/1/2 won). Initial odds are 10, settlement odds are 10
Total odds are 50
Payout (S) = 50 000 

2nd variant. (W/R) One Half of the bet is won, another is refunded. In that case S=(k+1)/2*C, and odds to settle the bet: K=(k+1)/2.

2) Bet stake is 1000 tenge. 
Kew J. - Wang K. Finished with the score 2:1 (6:4, 4:6, 6:2)

First event: Win. Odds are 5
Asian Handicap/total. «Team 3 — Team 4» (1/2 won/1/2 refund) 
Initial odds are 10, the odds are counted by formula: (K)= (10+1)/2=5.5
Total odds are 5*5.5=27.5
Payout (S) = 1000*27.5= 27 500

3rd variant. (L/R) One half of the bet is refunded, another is lost. In that situation (S) equals S=0,5*C. Accumulator is settled with K=0.5 odds (always 0.5 regardless of initial odds)

3) Bet stake is 1000 tenge. 
Kew J. - Wang K. Finished with the score 2:1 (6:4, 4:6, 6:2)

First event: Win. Odds are 5
Asian Handicap/total. «Team 3 — Team 4» (1/2 refund/1/2 lost) 
Initial odds are 10, settlement odds are 0.5
Total odds are 2.5
Payout (S) = 2500

4th variant. (L/L) Both are lost. In that situation (S) equals S=0 and accumulator is settled with K=0 

4) Bet stake is 1000 tenge. 
Kew J. - Wang K. Finished with the score 2:1 (6:4, 4:6, 6:2)

First event: Win. Odds are 5
Asian Handicap/total. «Team 3 — Team 4» (1/2 lost/1/2 lost) 
Initial odds are 10, settlement odds are 0
Total odds are 0
Payout (S) = 0